user manual d637-r/d639-r series servo valves...direct drive servovalves with integrated digital...

DIRECT DRIVE SERVOVALVES WITH INTEGRATED DIGITAL ELECTRONICS AND OPTIONAL FIELD BUS INTERFACE

Translation of the Original User Manual(CA61892-001; Version 1.0, 08/09)

USER MANUALD637-R/D639-R SERIES

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) A

Copyright© 2009 Moog GmbH Hanns-Klemm-Straße 2871034 BöblingenGermany

All rights reserved. No part of this user manual may be reproduced in any form (print, photocopies, microfilm, or by any othermeans) or edited, duplicated, or distributed with electronic systems without our prior written consent. Offenders will be held liable for the payment of damages.

Subject to change without notice.

Telephone: +49 7031 622-0Fax: +49 7031 622-191E-mail: [email protected] Internet: http://www.moog.com/industrial

mailto:[email protected]

http://www.moog.com/industrial

Table of Contents

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) i

Table of ContentsCopyright ................................................................................................................................................... AList of Tables ..............................................................................................................................................vList of Figures ........................................................................................................................................... vii

1 General Information ..................................................................................11.1 Notes on the user manual........................................................................................................... 1

1.1.1 Validity and subject to change without notice................................................................. 11.1.2 Completeness ................................................................................................................ 11.1.3 Storage location ............................................................................................................. 11.1.4 Typographical conventions............................................................................................. 2

1.2 Supplementing documents ........................................................................................................ 31.3 Manufacturer’s declaration......................................................................................................... 31.4 Registered trademarks................................................................................................................ 31.5 Warranty and liability .................................................................................................................. 4

2 Safety .........................................................................................................52.1 Intended operation ...................................................................................................................... 52.2 Handling in accordance with safety requirements................................................................... 62.3 Responsibilities ........................................................................................................................... 72.4 Selection and qualification of personnel .................................................................................. 82.5 Structural modifications ............................................................................................................. 82.6 Occupational safety and health ................................................................................................. 92.7 General safety instructions ........................................................................................................ 92.8 ESD ............................................................................................................................................. 102.9 Pressure limitation .................................................................................................................... 10

3 Product Description................................................................................113.1 Function and mode of operation.............................................................................................. 11

3.1.1 Operational modes....................................................................................................... 113.1.2 Representative depiction of the valve .......................................................................... 123.1.3 Permanent magnet linear force motor.......................................................................... 133.1.4 Valve electronics and valve software ........................................................................... 13

3.1.4.1 Block diagram of the valve electronics .................................................... 143.1.4.2 Valve states............................................................................................. 15

3.1.5 Signal interfaces........................................................................................................... 163.1.5.1 Valve connector X1 ................................................................................. 163.1.5.2 Field bus connectors X3 and X4 ............................................................. 173.1.5.3 Service connector X10 ............................................................................ 17

3.2 Safety function/fail-safe ............................................................................................................ 183.2.1 Mechanical fail-safe function ........................................................................................ 18

3.2.1.1 Valves with fail-safe function F, D or M ................................................... 193.2.1.2 Mechanical fail-safe state........................................................................ 193.2.1.3 Fail-safe identification.............................................................................. 193.2.1.4 Bushing-spool identification..................................................................... 20

3.2.2 Electrical fail-safe function............................................................................................ 203.2.3 Fail-safe events ............................................................................................................ 21

3.2.3.1 Shutdown/failure of the supply voltage.................................................... 213.2.3.2 Signals at the enable input ...................................................................... 213.2.3.3 Settable fault reaction.............................................................................. 223.2.3.4 Control commands .................................................................................. 22

3.2.4 Restarting the valve...................................................................................................... 23

Table of Contents

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) ii

3.3 Hydraulics .................................................................................................................................. 243.3.1 Operational modes....................................................................................................... 24

3.3.1.1 Flow control (Q-control) ........................................................................... 243.3.1.2 Pressure control (p-control)..................................................................... 253.3.1.3 Flow and pressure control (pQ-control)................................................... 26

3.3.2 Valve configurations and hydraulic symbols ................................................................ 273.3.2.1 4-way and 3-way operation ..................................................................... 273.3.2.2 2-way and 2x2-way operation ................................................................. 28

3.3.3 Leakage port Y............................................................................................................. 283.3.3.1 Y-identification......................................................................................... 28

3.3.4 Electrical and hydraulic zero position ........................................................................... 293.3.5 Notes on the pressure controller control response (D639-R)....................................... 29

3.4 Control ........................................................................................................................................ 303.4.1 Signal types for analog command inputs ..................................................................... 30

3.4.1.1 Signal type identification.......................................................................... 313.4.1.2 Flow control command inputs.................................................................. 323.4.1.3 Pressure control command inputs........................................................... 35

3.4.2 Analog actual value outputs 4–20 mA.......................................................................... 383.4.2.1 Spool position actual value output........................................................... 383.4.2.2 Pressure actual value output................................................................... 38

3.4.3 Digital enable input....................................................................................................... 383.5 Valve software ........................................................................................................................... 393.6 Moog Valve Configuration Software........................................................................................ 393.7 Nameplate .................................................................................................................................. 40

3.7.1 Model number .............................................................................................................. 413.7.2 LSS address (Layer Setting Services) ......................................................................... 413.7.3 Data matrix code .......................................................................................................... 41

4 Technical Data .........................................................................................434.1 General technical data .............................................................................................................. 434.2 Hydraulic data............................................................................................................................ 44

4.2.1 Pressure range identification........................................................................................ 454.3 Static and dynamic data ........................................................................................................... 454.4 Electrical data ............................................................................................................................ 46

4.4.1 Electromagnetic compatibility (EMC) ........................................................................... 474.5 Emissions................................................................................................................................... 47

5 Characteristic Curves .............................................................................495.1 Flow diagram (4-way operation)............................................................................................... 495.2 Flow signal characteristic curve .............................................................................................. 505.3 Pressure signal characteristic curves..................................................................................... 50

5.3.1 Valves with controlled spool position............................................................................ 505.3.2 Pressure control valves ................................................................................................ 51

5.4 Step response and frequency response ................................................................................ 52

6 Transportation and Storage ...................................................................556.1 Unpacking/checking a delivery ................................................................................................ 566.2 Scope of delivery of the valve .................................................................................................. 566.3 Storage ....................................................................................................................................... 56

Table of Contents

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) iii

7 Mounting and Connection to the Hydraulic System............................577.1 Dimensions (installation drawings) ......................................................................................... 58

7.1.1 Valves with CAN bus interface..................................................................................... 587.1.2 Valves with Profibus or EtherCAT interface ................................................................. 597.1.3 Valves without field bus interface ................................................................................. 60

7.2 Mounting surface....................................................................................................................... 617.2.1 Surface quality.............................................................................................................. 617.2.2 Mounting pattern of mounting surface.......................................................................... 61

7.3 Mounting the valves .................................................................................................................. 627.3.1 Tools and materials required........................................................................................ 627.3.2 Specification for installation screws.............................................................................. 627.3.3 Procedure..................................................................................................................... 62

8 Electrical Connection .............................................................................658.1 Wiring ......................................................................................................................................... 67

8.1.1 Tools and materials required........................................................................................ 678.1.2 Electrical connection of the valves ............................................................................... 67

8.2 Arrangement of the connectors ............................................................................................... 688.3 Valve connector X1 ................................................................................................................... 69

8.3.1 Mating connector of valve connector X1 ...................................................................... 698.3.2 Pin assignment of the 6+PE-pin valve connector X1 ................................................... 70

8.3.2.1 Differential voltage inputs ±10 V and 0–10 V .......................................... 708.3.2.2 Differential current inputs ±10 mA and 0–10 mA..................................... 718.3.2.3 Differential current inputs 4–20 mA ......................................................... 72

8.3.3 Pin assignment of the 11+PE-pin valve connector X1 ................................................. 738.3.3.1 Differential voltage inputs ±10 V and 0–10 V .......................................... 738.3.3.2 Differential current inputs ±10 mA and 0–10 mA..................................... 748.3.3.3 Differential current inputs 4–20 mA ......................................................... 75

8.3.4 Single-ended command signals ................................................................................... 768.3.5 Conversion of actual value output signals Iout .............................................................. 77

8.3.5.1 Valves with 6+PE-pin valve connector X1............................................... 778.3.5.2 Valves with 11+PE-pin valve connector X1............................................. 77

9 Start-up.....................................................................................................799.1 Preparations............................................................................................................................... 819.2 Start-up of the valves ................................................................................................................ 829.3 Configuration of the valves ...................................................................................................... 83

9.3.1 Configuration via the field bus interface ....................................................................... 839.3.1.1 Configuration with the machine controller ............................................... 839.3.1.2 Configuration with the Moog Valve Configuration Software .................... 84

9.3.2 Configuration via the service interface ......................................................................... 859.3.3 Factory setting of the valves......................................................................................... 859.3.4 Storing of parameters................................................................................................... 85

9.4 Filling and flushing the hydraulic system............................................................................... 869.5 Start-up of the hydraulic system.............................................................................................. 87

9.5.1 Venting ......................................................................................................................... 879.5.1.1 Tool required ........................................................................................... 879.5.1.2 Venting the valve and the actuator.......................................................... 88

10 Operation .................................................................................................8910.1 Preparations for operation ....................................................................................................... 9110.2 Operation of the valve............................................................................................................... 9110.3 Shutting down the valve ........................................................................................................... 92

Table of Contents

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) iv

11 Service .....................................................................................................9311.1 Removing the valves................................................................................................................. 95

11.1.1 Tools and materials required........................................................................................ 9511.1.2 Procedure..................................................................................................................... 95

11.2 Maintenance............................................................................................................................... 9611.2.1 Checking and replacing the port O-rings...................................................................... 96

11.2.1.1 Tools and materials required................................................................... 9611.2.1.2 Checking and replacing the O-rings ........................................................ 96

11.2.2 Monitoring the pressure transducer drift....................................................................... 9611.3 Troubleshooting ........................................................................................................................ 97

11.3.1 Leaks............................................................................................................................ 9711.3.1.1 Leak at the valve connecting surface ...................................................... 9711.3.1.2 Leak at the linear force motor screw plug ............................................... 9711.3.1.3 Leak at the venting screw........................................................................ 98

11.3.2 No hydraulic response by the valve ............................................................................. 9911.3.3 Instability of the external control loop ......................................................................... 10011.3.4 Instability of the internal valve control loops............................................................... 100

11.3.4.1 Flow control ........................................................................................... 10011.3.4.2 Pressure control .................................................................................... 100

11.4 Repair ....................................................................................................................................... 10111.4.1 Contact persons for repairs ........................................................................................ 101

12 Disposal .................................................................................................103

13 Accessories and Spare Parts...............................................................10513.1 Accessories ............................................................................................................................. 10513.2 Spare parts............................................................................................................................... 107

14 Index.......................................................................................................109

15 Appendix................................................................................................12115.1 Abbreviations, symbols and identification letters ............................................................... 12115.2 Additional literature................................................................................................................. 123

15.2.1 CAN fundamentals ..................................................................................................... 12315.2.2 Profibus fundamentals................................................................................................ 12315.2.3 EtherCAT fundamentals ............................................................................................. 12315.2.4 Moog publications ...................................................................................................... 123

15.3 Quoted standards.................................................................................................................... 12315.3.1 CiA DSP ..................................................................................................................... 12315.3.2 DIN ............................................................................................................................. 12415.3.3 DIN EN ....................................................................................................................... 12415.3.4 DIN EN ISO................................................................................................................ 12515.3.5 EN .............................................................................................................................. 12515.3.6 ISO ............................................................................................................................. 125

15.4 Quoted directives .................................................................................................................... 125

List of Tables

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) v

List of TablesTable 1: Operational modes of the valves.................................................................................................... 11

Table 2: Valve states.................................................................................................................................... 15

Table 3: Existing signal interfaces................................................................................................................ 16

Table 4: Position of the spool in the mechanical valve fail-safe state .......................................................... 19

Table 5: Fail-safe identification in the type designation ............................................................................... 19

Table 6: Bushing-spool identification in the type designation ...................................................................... 20

Table 7: Fail-safe events.............................................................................................................................. 21

Table 8: Y-identification in the type designation........................................................................................... 28

Table 9: Advantages of the different signal types for analog command inputs............................................ 30

Table 10: Signal type identification in the type designation ........................................................................... 31

Table 11: General technical data ................................................................................................................... 43

Table 12: Hydraulic data ................................................................................................................................ 44

Table 13: Pressure range identification in the type designation..................................................................... 45

Table 14: Static and dynamic data................................................................................................................. 45

Table 15: Electrical data................................................................................................................................. 46

Table 16: Specification for installation screws ............................................................................................... 62

Table 17: Accessories.................................................................................................................................. 105

Table 18: Spare parts................................................................................................................................... 107

Table 19: Abbreviations, symbols and identification letters ......................................................................... 121

List of Tables

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) vi

For your notes.

List of Figures

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) vii

List of FiguresFigure 1: Representative depiction of a direct drive servovalve................................................................... 12

Figure 2: Representative depiction of a permanent magnet linear force motor ........................................... 13

Figure 3: Block diagram of the valve electronics.......................................................................................... 14

Figure 4: Flow control (Q-control) block diagram ......................................................................................... 24

Figure 5: Pressure control (p-control) block diagram ................................................................................... 25

Figure 6: Flow and pressure control (pQ-control) block diagram ................................................................. 26

Figure 7: 4-way operation with mechanical fail-safe function M (hydraulic symbol)..................................... 27



Figure 10: 2x2-way operation with mechanical fail-safe function M (hydraulic symbol)................................. 28

Figure 11: Examples of the electrical and hydraulic zero position of different spools in the flow signal characteristic curve .............................................................. 29

Figure 12: Differential flow control command input ±10 V (circuit and characteristic curve) .......................... 32

Figure 13: Differential flow control command input ±10 mA (circuit and characteristic curve) ....................... 33

Figure 14: Differential flow control command input 4–20 mA (circuit and characteristic curve) ..................... 34

Figure 15: Differential pressure control command input 0–10 V (circuit and characteristic curve) ................ 35

Figure 16: Differential pressure control command input 0–10 mA (circuit and characteristic curve) ............. 36

Figure 17: Differential pressure control command input 4–20 mA (circuit and characteristic curve) ............. 37

Figure 18: Nameplate (example).................................................................................................................... 40

Figure 19: Flow diagram (4-way operation).................................................................................................... 49

Figure 20: Flow signal characteristic curve with equal electrical and hydraulic zero position ........................ 50

Figure 21: Setup for measuring the flow signal characteristic curve .............................................................. 50

Figure 22: Pressure signal characteristic curve of the valves with controlled spool position and zero lap .... 50

Figure 23: Setup for measuring the pressure signal characteristic curve on valves with controlled spool position ........................................................................................ 50

Figure 24: Pressure signal characteristic curve of the pressure control valves ............................................. 51

Figure 25: Setup for measuring the pressure signal characteristic curve on pressure control valves ........... 51

Figure 26: Step response of the spool stroke for valves with QN = 60 l/min (16 gpm) ................................... 52

Figure 27: Step response of the spool stroke for valves with QN = 100 l/min (26 gpm) ................................. 52

Figure 28: Frequency response of the spool stroke for valves with QN = 60 l/min (16 gpm) ......................... 53

Figure 29: Frequency response of the spool stroke for valves with QN = 100 l/min (26 gpm) ....................... 53

Figure 30: Installation drawing for valves with CAN bus interface, dimensions in mm (inches)..................... 58

Figure 31: Installation drawing for valves with Profibus or EtherCAT interface, dimensions in mm (inches). 59

Figure 32: Installation drawing for valves without field bus interface, dimensions in mm (inches)................. 60

Figure 33: Mounting pattern of mounting surface as per ISO 4401-05-05-0-05, dimensions in mm (inches) 61

List of Figures

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) viii

Figure 34: Arrangement of the connectors on the valve electronics housing (maximum equipment specification).............................................................................................. 68

Figure 35: 6+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (circuit and pin assignment).................................... 70

Figure 36: 6+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (circuit and pin assignment) .............................. 71

Figure 37: 6+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (circuit and pin assignment) .................................................. 72

Figure 38: 11+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (circuit and pin assignment).................................... 73

Figure 39: 11+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (circuit and pin assignment) .......................................................................................................... 74

Figure 40: 11+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (circuit and pin assignment) .................................................. 75

Figure 41: Circuit for single-ended command signals .................................................................................... 76

Figure 42: Circuit for converting the actual value output signals Iout (for valves with 6+PE-pin valve connector X1) ............................................................................. 77

Figure 43: Circuit for converting the actual value output signals Iout (for valves with 11+PE-pin valve connector X1) ........................................................................... 77

Figure 44: Connection of the valve to a PC via the CAN bus interface (field bus connector X3)................... 84

Figure 45: Connection of the valve to a PC via the service interface (service connector X10)...................... 85

Figure 46: Repair quality seal....................................................................................................................... 101

1 General Information Notes on the user manual

© Moog GmbH User Manual "D637-R/D639-R Series" (CA61892-001; Version 1.0, 08/09) 1

1 General Information

1.1 Notes on the user manualNotes on the user manualThis user manual applies only to the standard models of D637-R/D639-R se-

ries valves. It contains the most important information for ensuring proper andcorrect operation of the valves.

Chapter "2.1 Intended operation", page 5Chapter "2.2 Handling in accordance with safety requirements", page 6

The contents of this user manual and the application-relevant product-relatedhardware and software documentation must be read, understood and followedin all points by each person responsible for machine planning, assembly andoperation before work with and on the valves is started. This requirement ap-plies in particular to the safety instructions.

Chapter "1.1.2 Completeness", page 1Chapter "2.3 Responsibilities", page 7Chapter "2.4 Selection and qualification of personnel", page 8Chapter "2.2 Handling in accordance with safety requirements", page 6

This user manual has been prepared with great care in compliance with the rel-evant regulations, state-of-the-art technology and our many years of knowl-edge and experience. The full contents have been generated to the best of theauthors’ knowledge. However, the possibility of error remains and improvements are possible.Please feel free to submit any comments about possible errors and incompleteinformation to us.

1.1.1 Validity and subject to change without noticeValidity of the user manual and subject to change without notice

The information contained in this user manual is valid and correct at the mo-ment of release of this version of the user manual. The version number and re-lease date of this user manual are indicated in the footer.

Changes may be made to this user manual at any time and without reasonsbeing given.

1.1.2 CompletenessCompleteness of the user manual

This user manual is only complete in conjunction with the application-relevantproduct-related hardware and software documentation.Available documents:

Chapter "1.2 Supplementing documents", page 3

1.1.3 Storage locationStorage location for the user manual

This user manual, together with all the application-relevant product-relatedhardware and software documentation, must be located in the near vicinity ofthe valve or superordinated machine and must be accessible at all times.

Special models of the valves custom-made for specific customers, suchas e.g., valves with axis control function (ACV), are not explained in thisuser manual.Please contact us or one of our authorized service centers for informationon these special models.

1 General Information Notes on the user manual


1.1.4 Typographical conventions

Typographical conventions

DANGER Identifies safety instructions which are intended to warnof immediately imminent danger to life and limb or seriousdamage to property.Failure to comply with these safety instructions will inevi-tably result in fatalities, serious personal injuries (crip-pling/disablement) or serious damage to property!

WARNING Identifies safety instructions which are intended to warnof possible danger to life and limb or possible seriousdamage to property.Failure to comply with these safety instructions may result infatalities, serious personal injuries (crippling/disablement) orserious damage to property!

CAUTION Identifies safety instructions which are intended to warn of mi-nor personal injuries or minor damage to property.Failure to comply with these safety instructions may result inminor personal injuries or minor damage to property.

Identifies important notes/information

• or – Identifies listings.

Identifies references to another chapter, another page, table orillustration in the user manual.

"…" Identifies chapter headings or document titles, which are refer-enced.

Blue text Identifies hyperlinks in the PDF file.

1., 2., … Identifies steps in a procedure which must be performed inconsecutive order.

'…' Identifies parameters of the valve software (e.g., 'Node-Id') orthe valve state (e.g., 'ACTIVE').

Identifies the direction of the valve opening (e.g., P T).

1 General Information Supplementing documents


1.2 Supplementing documents

Supplementing documents

The following supplementing documents are available:• Application notes "Technical Note TN 353"

Protective grounding and electrical shielding of hydraulic valves with integrated electronics

• Application notes "Technical Note TN 494"Maximum permissible lengths of electric cables for the connection of hydraulic valves with integrated electronics

• Catalog "D637-R/D639-R"

1.3 Manufacturer’s declarationManufacturer’s declaration

The valves comply with the standards specified in the associated manufac-turer’s declaration.The valves comply with the requirements of the Machine Directive 98/37/EC.Refer to the associated manufacturer’s declaration for the applied standards.

1.4 Registered trademarksRegistered trademarks Moog and Moog Authentic Repair® are registered trademarks of Moog Inc. and

its subsidiaries.

Microsoft® and Windows® are either registered trademarks or trademarks ofthe Microsoft® Corporation in the USA and/or other countries.

The supplementing documents mentioned here are not included in thevalves’ scope of delivery. They are available as accessories.

Chapter "13.1 Accessories", page 105The PDF files of the supplementing documents can be downloaded fromthe following link:http://www.moog.com/industrial/literature

Please contact us or one of our authorized service centers for the manu-facturer’s declaration.

All the product and company names mentioned in this user manual arepossibly registered names or trademarks of the respective manufacturers.The use of these names by third parties for their own purposes may in-fringe the rights of the manufacturers.The absence of the symbols ® or ™ does not indicate that the name isfree from trademark protection.

http://www.moog.com/industrial/literature

1 General Information Warranty and liability


1.5 Warranty and liabilityOur General Terms and Conditions of Sale and Payment always apply. Theseare made available to the buyer at the latest on conclusion of the contract.

Exclusion of warranty and liability

Among other things, warranty and liability claims for personal injury and dam-age to property are excluded if they are caused by one or more of the following:

• Work with and on the valves or handling of the valves by non-qualifiedpersonnel

Chapter "2.4 Selection and qualification of personnel", page 8• Non-intended operation

Chapter "2.1 Intended operation", page 5• Handling not in accordance with safety requirements

Chapter "2.2 Handling in accordance with safety requirements", page 6• Omission of the application-relevant occupational safety and health mea-

suresChapter "2.6 Occupational safety and health", page 9

• Failure to observe this user manual or the application-relevant product-re-lated hardware and software documentation

• Failure to observe the application-relevant safety standards of the manu-facturer and the operator of the machine

• Failure to observe the latest versions of the relevant national and interna-tional regulations, standards and guidelines (such as e.g., the EU Machin-ery Directive, the regulations of the trade association and of TÜV or VDE)in the configuration, construction and operation of the machine with all itsinstalled components

• Omission of suitable safety devices for limiting the pressure at the hydrau-lic ports

Chapter "2.9 Pressure limitation", page 10• Failure to comply with the preconditions for satisfying the EMC protection

requirementsChapter "4.4.1 Electromagnetic compatibility (EMC)", page 47

• Use of the valves in a state that is not technically faultless or not opera-tionally safe

• Unauthorized or improperly performed structural modifications, repairs ormaintenance

Chapter "2.5 Structural modifications", page 8Chapter "11 Service", page 93

• Failure to adhere to the inspection and maintenance instructions of themanufacturer and the operator of machine

• Failure to adhere to all the technical data relating to the storage, transpor-tation, mounting, removal, connection, start-up, configuration, operation,cleaning, maintenance or elimination of any faults, in particular the ambi-ent conditions and the data pertaining to the hydraulic fluid used

Chapter "4 Technical Data", page 43• Improper storage, transportation, mounting, removal, connection, start-up,

configuration, operation, cleaning, maintenance, elimination of any faultsor disposal

• Use of unsuitable or defective accessories or of unsuitable or defectivespare parts

Chapter "13 Accessories and Spare Parts", page 105• Catastrophes caused by foreign objects or force majeure

2 Safety Intended operation


2 Safety

2.1 Intended operationIntended operation

The valves may only be operated as a component part of a superordinatedoverall system, for example in a machine.They may be used only as control elements to control flow and/or pressure inhydraulic circuits that regulate position, speed, pressure and power. The valves are intended for use with mineral-oil-based hydraulic oils. Use withother media requires our prior approval.Correct, reliable and safe operation of the valves requires qualified projectplanning as well as proper utilization, transportation, storage, mounting, re-moval, electrical and hydraulic connection, start-up, configuration, operation,cleaning and maintenance.

The valves may only be started up when the following is ensured:• The superordinated machine with all its installed components complies

with the latest versions of the relevant national and international regula-tions, standards and guidelines (such as e.g., the EU Machinery Directive,the regulations of the trade association and of TÜV or VDE).

• The valves and all other installed components are in a technically fault-free and operationally reliable state.

• No signals which can lead to uncontrolled movements in the machine aretransmitted to the valves.

Intended operation also includes the following:• Observation of this user manual• Handling of the valves in accordance with safety requirements

Chapter "2.2 Handling in accordance with safety requirements", page 6• Adherence to all inspection and maintenance instructions of the manufac-

turer and the operator of the machine• Observation of all application-relevant product-related hardware and soft-

ware documentation• Observation of all application-relevant safety standards of the manufac-

turer and the operator of the machine• Observation of all the latest versions of the application-relevant national

and international regulations, standards and guidelines (such as e.g., theEU Machinery Directive, the regulations of the trade association and ofTÜV or VDE)

WARNING The valves may be operated exclusively within the frame-work of the data and applications specified in the usermanual.Any other or more extensive use is not permitted.

WARNING Use of the valves in potentially explosive environments isnot permitted.

2 Safety Handling in accordance with safety requirements


Handling in accordance with safety requirements

In order to ensure that the valves are handled in accordance with safety re-quirements and operated without faults, it is essential to observe the following:

• All safety instructions in the user manual• All safety instructions in the application-relevant product-related hardware

and software documentation• All safety instructions in the application-relevant safety standards of the

manufacturer and the operator of the machine• All relevant national and international safety and accident prevention regu-

lations, standards and guidelines, such as e.g., the safety regulations ofthe trade association, of TÜV or VDE, in particular the following standardspertaining to the safety of machinery:

– DIN EN ISO 12100– DIN EN 982– DIN EN 563– EN 60204

Observing the safety instructions and the safety and accident prevention regu-lations, standards and guidelines will help to prevent accidents, malfunctionsand damage to property!

2.2 Handling in accordance with safety requirements

WARNING It is the responsibility of the manufacturer and the opera-tor of the machine to ensure that the valves are handled inaccordance with safety requirements.

WARNING As in any electronic control system, also the failure of cer-tain valve components can lead to an uncontrolled and/orunpredictable operational sequence. All types of failure onsystem level must be taken into consideration and appro-priate protective measures must be taken.The use of automatic control technology in a machine calls forspecial measures.If automatic control technology is to be used, the user should,in addition to all potentially available standards or guidelineson safety-engineering installations, consult the manufacturersof the components used in great depth.

2 Safety Responsibilities


2.3 ResponsibilitiesResponsibility of the manufacturer and the operator of the machine

The manufacturer and the operator of the machine are responsible for ensuringthat work with and on the valves and handling of the valves is planned and per-formed in accordance with the directions given in this user manual and in theapplication-relevant product-related hardware and software documentation.The manufacturer and the operator of the machine are particularly responsiblefor ensuring the following:

• Selection and training of personnelChapter "2.4 Selection and qualification of personnel", page 8

• Intended operationChapter "2.1 Intended operation", page 5

• Handling in accordance with safety requirementsChapter "2.2 Handling in accordance with safety requirements", page 6

• Taking and monitoring of the application-relevant occupational safety andhealth measures

Chapter "2.6 Occupational safety and health", page 9• Observation of all application-relevant safety standards of the manufac-

turer and the operator of the machine• Observation of the latest versions of the relevant national and interna-

tional regulations, standards and guidelines (such as e.g., the EU Machin-ery Directive, the regulations of the trade association and of TÜV or VDE)in the configuration, construction and operation of the machine with all itsinstalled components

• Installation of suitable safety devices for limiting the pressure at the hy-draulic ports

Chapter "2.9 Pressure limitation", page 10• Compliance with the preconditions for satisfying the EMC protection re-

quirementsChapter "4.4.1 Electromagnetic compatibility (EMC)", page 47

• Use of the valves in a technically faultless and operationally safe state• Prevention of unauthorized or improperly performed structural modifica-

tions, repairs or maintenanceChapter "2.5 Structural modifications", page 8Chapter "11 Service", page 93

• Definition and observation of the application-specific inspection and main-tenance instructions

• Adherence to all technical data relating to the storage, transportation,mounting, removal, connection, start-up, configuration, operation, clean-ing, maintenance or elimination of any faults, in particular the ambientconditions and the data pertaining to the hydraulic fluid used

Chapter "4 Technical Data", page 43• Proper storage, transportation, mounting, removal, connection, start-up,

configuration, operation, cleaning, maintenance, elimination of any faultsor disposal

• Use of suitable and faultless accessories and of suitable and faultlessspare parts

Chapter "13 Accessories and Spare Parts", page 105• Handy and accessible storage of this user manual and of the application-

relevant product-related hardware and software documentationChapter "1.1.3 Storage location", page 1

2 Safety Selection and qualification of personnel


2.4 Selection and qualification of personnelSelection and qualification of personnel

Qualified users Qualified users are specialized personnel with the required knowledge and ex-perience who have been trained to carry out such work. The specialized per-sonnel must be able to recognize and avert the dangers which they are ex-posed to when working with and on the valves.In particular, these specialized personnel must be authorized to operate,earth/ground and mark hydraulic and electrical devices, systems and powercircuits in accordance with the standards of safety engineering. Project plan-ners must be fully conversant with automation safety concepts.

2.5 Structural modificationsStructural modifications

WARNING Only properly qualified and authorized users may workwith and on the valves.

WARNING In the interests of avoiding damage to the valves or acces-sories, structural modifications, on account of the com-plexity of the internal components of the valves or acces-sories, may only be carried out by us or one of our autho-rized service centers.

2 Safety Occupational safety and health


2.6 Occupational safety and healthOccupational safety and health measures and equipment

2.7 General safety instructionsGeneral safety instructions

WARNING The magnets in the permanent magnet linear force motorcreate strong magnetic fields, which can have a disruptiveeffect on sensitive devices, such as e.g., cardiac pace-makers. The relevant safe distances appropriate for thedevice must be observed.

CAUTION Depending on the application, significant levels of noise maybe generated when the valves are operated. If necessary, the manufacturer and operator of the machinemust take appropriate sound insulation measures or stipulatethat suitable safety equipment, such as e.g., ear protection, beworn.

CAUTION Falling objects, such as e.g., valve, tool or accessory, cancause injury.Suitable safety equipment, such as e.g., safety shoes, must beworn to provide protection against injury.

CAUTION Valves and hydraulic port lines can become very hot during op-eration.Suitable safety equipment, such as e.g., work gloves, must beworn to provide protection against injury before touching thevalve or the connection cables during such operations asmounting, removal, electrical and hydraulic connection, trou-bleshooting or servicing.

CAUTION When handling hydraulic fluids, observe the safety provisionsapplicable to the hydraulic fluid used.If necessary, suitable safety equipment, such as e.g., workgloves, must be worn.


Chapter "2.4 Selection and qualification of personnel", page 8

WARNING Observe and adhere to the technical data and in particularthe information given on the valve nameplate.

Chapter "4 Technical Data", page 43

CAUTION This user manual and the application-relevant product-relatedhardware and software documentation must be inserted in themachine’s operating instructions.

2 Safety ESD


2.8 ESDESD

2.9 Pressure limitationSafety devices for pressure limitation

WARNING Electrical discharges can damage internal device compo-nents.Protect the valve, accessories and spare parts againststatic charging.In particular, avoid touching the connector contacts.

WARNING Excessive pressure at the hydraulic ports damages thevalve and can cause unsafe states in the machine and per-sonal injury.Pressure-limiting valves, for example, or other comparablesafety devices must be installed to limit the pressure at all hy-draulic ports to the specified maximum operating pressure.Maximum operating pressure:


3 Product Description Function and mode of operation


3 Product Description

3.1 Function and mode of operationFunction of the valves: throttle valves

The valves of the D637-R/D639-R series are direct drive servovalves(DDV: Direct Drive Valve). The valves are throttle valves for 2-, 3-, 4- or even2x2-way applications. The valves are suitable for electrohydraulic position, speed, pressure and forcecontrol even for high dynamic requirements. The valves control flow and/orregulate pressure.The valves of the D637-R series can be used for flow control. The valves of theD639-R series can be used for pressure and pressure limitation control and/orflow control.The control electronics and a pressure transducer (D639-R only) are integratedin the valve.

3.1.1 Operational modesDepending on the model, one of the operational modes below is preset in thevalve.Changeover between the operational modes is only possible in the D639-R se-ries valves with pQ-control and can be accessed via the integrated service orfield bus interface.

Operational modes: Q-, p-, pQ-control

Series

D637-R D639-R

Operational mode Q p pQ

Flow control (Q-control)Chapter "3.3.1.1 Flow control (Q-control)", page 24

• 1

1 Operational mode preset on delivery

•

Pressure control (p-control)Chapter "3.3.1.2 Pressure control (p-control)", page 25

• 1 •

Flow and pressure control (pQ-control)Chapter "3.3.1.3 Flow and pressure control (pQ-control)",

page 26

• 1

Table 1: Operational modes of the valves



3.1.2 Representative depiction of the valve

Item Designation Further information

1 Analog input connectors X5…X7

The analog input connectors X5…X7 are only provided on valves with axis control function(ACV).

2 Field bus connector X4 The field bus connectors X3 and X4 are only provided on valves with field bus interfaces.Chapter "3.1.5.2 Field bus connectors X3 and X4", page 17Chapter "9.3.1 Configuration via the field bus interface", page 83

3 Field bus connector X3

4 Digital signal interface connector X2

The digital signal interface connector X2 is only provided on valves with axis control function(ACV).

5 Valve connector X1 Chapter "8.3 Valve connector X1", page 69

6 Service connector X10 The service connector X10 is only provided on valves without CAN bus interfaces.Chapter "3.1.5.3 Service connector X10", page 17Chapter "9.3.2 Configuration via the service interface", page 85

7 Venting screw The venting screw is only provided on D639-R series valves.Chapter "9.5.1 Venting", page 87

8 Spool

9 Bushing

10 Permanent magnet linear force motor

Chapter "3.1.3 Permanent magnet linear force motor", page 13

11 Status LEDs The multicolor LEDs are only provided on valves with field bus interfaces. They serve to indi-cate the valve operating state and the network status. The number and the function of LEDsare dependent on the field bus.

12 Digital valve electronics Chapter "3.1.4 Valve electronics and valve software", page 13

13 Position transducer (LVDT) Chapter "3.3.1.1 Flow control (Q-control)", page 24

14 Pressure transducer The pressure transducer is only provided on D639-R series valves.Chapter "3.3.1.2 Pressure control (p-control)", page 25

T…Y Ports Chapter "7.2.2 Mounting pattern of mounting surface", page 61

Figure 1: Representative depiction of a direct drive servovalve



3.1.3 Permanent magnet linear force motor

Representative depiction of a permanent magnet linear force motor

Figure 2: Representative depiction of a permanent magnet linear force motor

Permanent magnet linear force motor

A permanent magnet linear force motor (figure 2 or item 10 in figure 1) is usedto drive the valve spool (item 8 in figure 1). In contrast to proportional-solenoid drives, the permanent magnet linear forcemotor can move the spool from the spring-centered center position in bothworking directions. This results in high actuating power for the spool simulta-neously with very good static and dynamic properties.The permanent magnet linear force motor is a differential motor excited by per-manent magnets. Some of the magnetic force is already provided by the per-manent magnets. The linear force motor’s power demand is thus significantlylower than is the case with comparable proportional solenoids.The linear force motor (figure 2 or item 10 in figure 1) drives the valve spool(item 8 in figure 1). The spool starting position is determined in the de-ener-gized state by the centering springs (item 5 in figure 2). The linear force motorenables the spool to be displaced from the starting position in both directions.Here, the actuating power of the linear force motor is proportional to the coilcurrent. The high forces of the linear force motor and centering springs effect precisespool movement even against flow and frictional forces.

3.1.4 Valve electronics and valve softwareIntegrated digital valve electronics and valve software

The digital driver and control electronics are integrated in the valve.These valve electronics contain a microprocessor system which executes all ofthe important functions via the valve software it contains. The digital electronicsenable the valve to be controlled across the entire working range without driftand almost regardless of temperature.

Chapter "3.5 Valve software", page 39

The valve electronics can assume device- and drive-specific functions, such ase.g., command signal ramps or dead band compensation.This can relieve the strain on external machine control and if necessary fieldbus communication.

Item Designation

1 Coil

2 Bearing

3 Armature

4 Permanent magnets

5 Centering springs

6 Screw plug



3.1.4.1 Block diagram of the valve electronics

Figure 3: Block diagram of the valve electronics

1 The field bus connectors X3 and X4 are only provided on valves with field bus interfaces.2 The service connector X10 is only provided on valves without CAN bus interfaces.3 The digital signal interface connector X2 is only provided on valves with axis control function (ACV).4 The analog input connectors X5…X7 are only provided on valves with axis control function (ACV).5 The multicolor LEDs are only provided on valves with field bus interfaces.



3.1.4.2 Valve states

Valve state The valve’s device status is referred to as the valve state.The valve state can be set or interrogated via the service or field bus interfacein the valve software. Setting and interrogation can be performed for examplewith the Moog Valve Configuration Software.

Chapter "3.6 Moog Valve Configuration Software", page 39

Fail-safe states and fail-safe events:Chapter "3.2.1 Mechanical fail-safe function", page 18Chapter "3.2.2 Electrical fail-safe function", page 20Chapter "3.2.3 Fail-safe events", page 21

WARNING The 'NOT READY' valve state is caused only by a serious,non-rectifiable fault.If the 'NOT READY' valve state occurs, the valve must besent to us or one of our authorized service centers for in-spection.

Valve state Explanation

'ACTIVE' The valve is ready for operation and is in closed-loop control operation.

'HOLD' The valve is ready for operation and is in the electrical fail-safe state onaccount of a control command.A preset command signal is corrected.

Chapter "3.2.2 Electrical fail-safe function", page 20

'FAULT HOLD' The valve is ready for operation and is in the electrical fail-safe state onaccount of a fault reaction.A preset command signal is corrected.

Chapter "3.2.2 Electrical fail-safe function", page 20

'DISABLED' The valve electronics are ready for operation and the valve is in the me-chanical fail-safe state on account of a control command.

Chapter "3.2.1.2 Mechanical fail-safe state", page 19Signals can be evaluated.The current to the permanent magnet linear force motor is switched off.

'FAULT DISABLED' The valve electronics are ready for operation and the valve is in the me-chanical fail-safe state on account of a fault reaction.Signals can be evaluated.

Chapter "3.2.1.2 Mechanical fail-safe state", page 19The current to the permanent magnet linear force motor is switched off.

'INIT' The valve is switched off, is in the mechanical fail-safe state and can beconfigured via the service or field bus interface.

Chapter "3.2.1.2 Mechanical fail-safe state", page 19

'NOT READY' The valve is not ready for operation and is in the mechanical fail-safestate on account of a serious non-rectifiable fault.


Table 2: Valve states



3.1.5 Signal interfacesThe valves are provided with a valve connector X1 with model-dependent ana-log and digital inputs/outputs.

Chapter "3.1.5.1 Valve connector X1", page 16Pin assignment of valve connector X1:

Chapter "8.3 Valve connector X1", page 69

Depending on the model, the valves can also be provided with an isolated fieldbus interface (field bus connectors X3 and X4) and/or a service interface (ser-vice connector X10).

Chapter "3.1.5.2 Field bus connectors X3 and X4", page 17Chapter "3.1.5.3 Service connector X10", page 17

Existing signal interfaces

3.1.5.1 Valve connector X1Control of the valves Valves without field bus interfaces must be controlled with analog command

signals via valve connector X1.Valves with field bus interfaces can be controlled either with analog commandsignals via valve connector X1 or with digital signals via the field bus interface(connectors X3 and X4).

Chapter "3.4 Control", page 30

Analog command inputsDepending on the model, different signal types for analog command inputs forflow or pressure control can be set in the valve.

Chapter "3.4.1 Signal types for analog command inputs", page 30

Analog actual value outputs

Depending on the model, the valve can be provided with different analog actualvalue outputs for flow and/or pressure control.

Chapter "3.4.2 Analog actual value outputs 4–20 mA", page 38

Enable input The valves are provided with a digital enable input.Chapter "3.4.3 Digital enable input", page 38

Pin assignment of valve connector X1:Chapter "8.3 Valve connector X1", page 69

Signal interface

Valve connector

X1

Field bus connectorsX3 and X4

Service connector

X10

Valves without field bus interface • - • 1

1 The valves can be started up and configured via the CAN bus or service interface with the MoogValve Configuration Software.

Chapter "9.3.1.2 Configuration with the Moog Valve Configuration Software", page 84

Valves with CAN bus interface • • 1 -

Valves with Profibus interface • • • 1

Valves with EtherCAT interface • • • 1

Table 3: Existing signal interfaces

It is necessary when ordering the valve to establish whether a field bus in-terface is to be integrated and if necessary one of the above-mentionedfield bus interfaces is to be selected.



3.1.5.2 Field bus connectors X3 and X4Field bus connectors X3 and X4

Valves with field bus interfaces are started up, controlled, monitored and con-figured via the field bus interface (connectors X3 and X4).

Chapter "9.3.1 Configuration via the field bus interface", page 83To reduce the amount of wiring, the field bus interface is provided with two con-nectors on the valve. The valves can thus be directly looped into the field bus,i.e., without the use of external T-pieces.

Valves with CAN bus interface can be started up and configured via the CANbus interface (field bus connector X3) with the Moog Valve Configuration Soft-ware.

Chapter "9.3.1.2 Configuration with the Moog Valve Configuration Soft-ware", page 84

3.1.5.3 Service connector X10Service connector X10 Valves without CAN bus interface can be started up and configured via the ser-

vice interface (service connector X10) with the Moog Valve Configuration Soft-ware.

Chapter "9.3.2 Configuration via the service interface", page 85

3 Product Description Safety function/fail-safe


3.2 Safety function/fail-safe

Fail-safe functions The valve fail-safe functions increase the safety of the user if, for example, thevalve supply voltage fails.There are two different fail-safe functions: mechanical and electrical.

Chapter "3.2.1 Mechanical fail-safe function", page 18Chapter "3.2.2 Electrical fail-safe function", page 20

The valve can be rendered in the fail-safe state by different events.Chapter "3.2.3 Fail-safe events", page 21

Mechanical fail-safe state The mechanical valve fail-safe state is denoted by the fact that the spool is in adefined spring-determined position.


Electrical fail-safe state The electrical valve fail-safe state is denoted by the fact that the valve is in the'HOLD' or 'FAULT HOLD' valve state and a preset command signal is cor-rected by suitable positioning of the spool.

It is essential to ensure at the machine end that these fail-safe states result in asafe state in the machine.

The valve must be restarted after its transition into the fail-safe state.Chapter "3.2.4 Restarting the valve", page 23

3.2.1 Mechanical fail-safe functionMechanical fail-safe functions

The following mechanical fail-safe functions are available:• Fail-safe function F• Fail-safe function D• Fail-safe function M

WARNING It is essential to observe the notes/information on han-dling in accordance with safety requirements particularlyin the case of safety-critical applications.

Chapter "2.2 Handling in accordance with safety require-ments", page 6

WARNING The manufacturer and the operator of the machine are re-sponsible for ensuring that, when the machine is config-ured, designed and operated with all of the installed com-ponents, the latest version of the safety standards rele-vant to safety-critical applications applicable to avertingdamage are observed.It is vital among other things to ensure that both the individualcomponents and the complete machine can be rendered in asafe state.

It is necessary when ordering the valve to establish which mechanical fail-safe function is to be integrated in the valve.Which mechanical fail-safe function is integrated in the valve can be as-certained from the fail-safe identification, i.e., the 6th position in the valvetype designation.

Chapter "3.2.1.3 Fail-safe identification", page 19



3.2.1.1 Valves with fail-safe function F, D or MFail-safe functions F, D and M

In the case of the fail-safe functions F, D and M, the mechanical setting of thelinear force motor or corresponding centering springs at the factory establisheswhich position the spool assumes in the mechanical fail-safe state.Position of spool: Table 4, page 19

3.2.1.2 Mechanical fail-safe stateThe valve is in the mechanical fail-safe state when the spool is in a definedspring-determined position.

Position of the spool in the mechanical fail-safe state

3.2.1.3 Fail-safe identificationFail-safe identification The fail-safe identification, i.e., the 6th position in the valve type designation,

indicates which mechanical fail-safe function is integrated in the valve.Type designation: Chapter "3.7 Nameplate", page 40

Fail-safe function Position of spool

F Defined position of spool: approx. 10 % valve opening: P B and A T

D Defined position of spool: approx. 10 % valve opening: P A and B T

M Defined overlapped center position of spoolThe mechanical fail-safe function M gives rise only in conjunction with spools whichhave an overlap greater than ±10 %, i.e., in valves with bushing-spool identifica-tion D, to the defined overlapped center position.In the case of a smaller overlap, i.e., in valves with a different bushing-spool identifi-cation, a defined overlapped center position is not possible.

Chapter "3.2.1.4 Bushing-spool identification", page 20

Table 4: Position of the spool in the mechanical valve fail-safe state

Type designation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

• • • • • • • • • • • • • • • • • • •

Ident. Fail-safe function Further information

F Valves with fail-safe function F Table 4, page 19Chapter "3.2.1.1 Valves with fail-safe

function F, D or M", page 19D Valves with fail-safe function D

M Valves with fail-safe function M

X Valves with special fail-safe function

Table 5: Fail-safe identification in the type designation

fail-safe identification



3.2.1.4 Bushing-spool identificationBushing-spool identification

The bushing-spool identification, i.e., the 4th position in the valve type designa-tion, indicates which bushing-spool version is integrated in the valve.Type designation: Chapter "3.7 Nameplate", page 40

3.2.2 Electrical fail-safe functionElectrical fail-safe function and electrical fail-safe state

After transition into the 'HOLD' or 'FAULT HOLD' valve state, the valve is in theelectrical fail-safe state and a preset command signal is corrected by suitablepositioning of the spool.Depending on the operational mode set, the command signal is a flow controland/or pressure control command signal.The command signal can be set or interrogated via the service or field bus in-terface in the valve software. Setting and interrogation can be performed forexample with the Moog Valve Configuration Software.

Command signals that may be applied from an external source via the field businterface or via the analog inputs are ignored in the 'HOLD' and 'FAULT HOLD'valve states.

Type designation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

• • • • • • • • • • • • • • • • • • •

Ident. Valve configuration Bushing-spool version

O 4-way Linear characteristic curve, zero lap

A 4-way Linear characteristic curve, ±1.5 % to ±3 % positive overlap

D 4-way Linear characteristic curve, ±10 % positive overlap

B 3-way Valve opening: P A and A T (D639-R only)

Z 2x2-way Valve opening: P A and B T (externally connect P with B and A with T), with port Y only

X Special spool, on request

Table 6: Bushing-spool identification in the type designation

bushing-spool identification



3.2.3 Fail-safe events

Fail-safe events The valve is rendered in the fail-safe state in response to the fail-safe eventsset out below.The valve must be restarted after its transition into the fail-safe state.

Chapter "3.2.4 Restarting the valve", page 23

Valve state: Chapter "3.1.4.2 Valve states", page 15

3.2.3.1 Shutdown/failure of the supply voltage

Fail-safe due to shutdown/failure of the supply voltage

The valve is rendered in the mechanical fail-safe state when the supply voltageis shut down or fails.

3.2.3.2 Signals at the enable inputFail-safe due to signals at the enable input

The transition of the valve into the fail-safe state can also be initiated by a cor-responding signal at the enable input of valve connector X1. Depending on themodel, signals lower than 6.5 V at the enable input render the valve in the me-chanical or electrical fail-safe state.

Chapter "3.4.3 Digital enable input", page 38



Fail-safe event

Fail-safe state

Cause of the transition into the fail-safe state

mec

han.

elec

tr.

external event

settable fault

reactioncontrol

command

Shutdown/failure of the supply voltage

• •

Signals at the enable input of valve connector X1

• • •

Transition of the valve into the valve state

'HOLD' • •

'FAULT HOLD' • •

'DISABLED' • •

'FAULT DISABLED' • •

'INIT' • •

'NOT READY' • •Serious,

non-rectifi-able fault

Table 7: Fail-safe events

WARNING After the supply voltage to the valve is shut down, fails ordrops below 18 V, the linear force motor is no longerdriven by the valve electronics.



3.2.3.3 Settable fault reaction

Mechanical fail-safe state due to fault reaction

Mechanical fail-safe state due to fault reactionThe transition of the valve into the 'FAULT DISABLED' valve state and there-fore into the mechanical fail-safe state can be initiated by different events, suchas e.g., the supply voltage dropping below 18 V.It is possible to set in the valve software the event for which the valve is ren-dered in the 'FAULT DISABLED' valve state.The setting can be made or interrogated via the service or field bus interface inthe valve software. Setting and interrogation can be performed for examplewith the Moog Valve Configuration Software.


The transition of the valve into the 'NOT READY' valve state and therefore intothe mechanical fail-safe state is caused by a serious, non-rectifiable fault.

Electrical fail-safe state due to fault reaction

Electrical fail-safe state due to fault reactionThe transition of the valve into the 'FAULT HOLD' valve state and therefore intothe electrical fail-safe state can be initiated by different events, such as e.g., afault in the electric cable It is possible to set in the valve software the event for which the valve is ren-dered in the 'FAULT HOLD' valve state. The setting can be made or interrogated via the service or field bus interface inthe valve software. Setting and interrogation can be performed for examplewith the Moog Valve Configuration Software.


3.2.3.4 Control commandsControl commands The transition of the valve into the 'HOLD', 'DISABLED' and 'INIT' valve states

can be initiated by a control command.It is possible to set in the valve software the event for which the valve is ren-dered in the 'HOLD', 'DISABLED' or 'INIT' valve state. The setting can be made or interrogated via the service or field bus interface inthe valve software. Setting and interrogation can be performed for examplewith the Moog Valve Configuration Software.





3.2.4 Restarting the valve

Restarting the valve

After shutdown/failure of the supply voltage:After the transition of the valve into the fail-safe state on account of a shut-down/failure of the supply voltage to the valve, it will be necessary to restart thevalve by applying the supply voltage in accordance with the technical data. Ifnecessary, the valve must be returned to the 'ACTIVE' valve state.

After application of an enable signal lower than 6.5 V:After the transition of the valve into the fail-safe state on account of the applica-tion of an enable signal lower than 6.5 V, it will be necessary to restart thevalve by applying an enable signal between 8.5 V and 32 V.

After the transition of the valve into the 'FAULT DISABLED' or 'FAULT HOLD' valve state:After the transition of the valve into the fail-safe state on account of the transi-tion into the 'FAULT DISABLED' or 'FAULT HOLD' valve state, it can be re-started as follows:

• Acknowledge the fault via the service or field bus interface and return thevalve to the 'ACTIVE' valve state.

• Set the supply voltage to zero for at least 1 second under defined condi-tions and then restore the supply voltage in accordance with the technicaldata.

After the transition of the valve into the 'HOLD', 'DISABLED' or 'INIT' valve state:After the transition of the valve into the fail-safe state on account of the transi-tion into the 'HOLD', 'DISABLED' or 'INIT' valve state, it can be restarted as fol-lows:

• Return the valve to the 'ACTIVE' valve state.• Apply an enable signal less than 6.5 V, then apply an enable signal be-

tween 8.5 V and 32 V and return the valve to the 'ACTIVE' valve state.• Valves without field bus interface: Set the supply voltage to zero for at

least 1 second under defined conditions and then restore the supply volt-age in accordance with the technical data.

WARNING Before restarting the valve after the transition of the valveinto the fail-safe state, it is necessary to identify and ifnecessary rectify the cause of the fault at the machineend.It is also necessary to ensure that restarting the valvedoes not give rise to unintentional or dangerous states inthe machine.

3 Product Description Hydraulics


3.3 Hydraulics3.3.1 Operational modes

Possible operational modes of the different series: Table 1, page 11

3.3.1.1 Flow control (Q-control)

Flow control (Q-control): Controlling the spool position

Figure 4: Flow control (Q-control) block diagram

In this operational mode the position of the spool is controlled. The predefinedcommand signal corresponds to a particular spool position. The position of thespool is proportional to the control signal.

The command signal (command position for the spool) is transmitted to thevalve electronics. The actual spool position is measured with a position trans-ducer (LVDT) and transmitted to the valve electronics. Deviations between thetransmitted command position and the measured actual position of the spoolare corrected. The valve electronics drive the linear force motor, which posi-tions the spool accordingly. This process sets a specific flow.

The position command can be influenced by means of parameters in the valvesoftware (e.g., linearization, ramping, dead band, sectionally defined amplifica-tion, correction of the zero position). The parameters can be set or interrogated via the service or field bus interfacein the valve software. Setting and interrogation can be performed for examplewith the Moog Valve Configuration Software.

The flow that is set depends not only on the spool position but also on the pres-sure difference ∆p at the individual control lands.

Chapter "3.5 Valve software", page 39Chapter "5.1 Flow diagram (4-way operation)", page 49Chapter "5.2 Flow signal characteristic curve", page 50

WARNING To ensure faultless valve operation, it is necessary to con-figure the valve correctly with regard to flow and pressure.



3.3.1.2 Pressure control (p-control)

Pressure control (p-control): controlling the pressure in port A

Figure 5: Pressure control (p-control) block diagram

In this operational mode the pressure in port A is controlled. The predefinedcommand signal corresponds to a particular pressure in port A.

The command signal (command pressure for port A) is transmitted to the valveelectronics. The pressure in port A is measured with a pressure transducer andtransmitted to the valve electronics as the actual pressure. Deviations betweenthe predefined command pressure and the pressure measured in port A arecorrected. The valve electronics drive the linear force motor, which positionsthe spool accordingly. This process sets a specific flow, which results in a pres-sure change in port A. The controlled pressure follows the command signalproportionally.

The pressure command can be influenced by means of parameters in the valvesoftware (e.g., ramps, scaling, limitation). The pressure controller is designed as an extended PID controller. The param-eters of the PID controller and of the integrated pressure transducer can be setor interrogated via the service or field bus interface in the valve software. Set-ting and interrogation can be performed for example with the Moog Valve Con-figuration Software.

Chapter "3.3.5 Notes on the pressure controller control response (D639-R)", page 29

Chapter "3.5 Valve software", page 39Chapter "3.6 Moog Valve Configuration Software", page 39

WARNING Faultless valve functioning for pressure control is onlyguaranteed if the control loop is stable and the pressure inport T is lower than the pressure to be controlled.



Monitoring the pressure transducer drift

3.3.1.3 Flow and pressure control (pQ-control)

Flow and pressure control (pQ-control)

Figure 6: Flow and pressure control (pQ-control) block diagram

This operational mode is a combination of flow and pressure control, whereboth command signals, i.e., the command position for the spool and the com-mand pressure for port A, must be provided.

In pQ-control the position command calculated by the pressure controller iscompared with the position command applied from an external source. Thesmaller of the two command signals is forwarded to the position control loop.

The following combinations are for example possible:• Flow control with superimposed pressure limitation control• Forced changeover from one operational mode to the other

High pressure peaks in the hydraulic system can result in a drift of thevalve’s internal pressure transducer.To monitor any possible drift of the valve’s pressure transducer, we rec-ommend that the pressure transducer be checked 3, 6 and 12 months af-ter the valve is started up and thereafter at intervals of 6 months. This canbe conducted for example using comparison measurements with a cali-brated pressure gage. If necessary, the internal pressure transducer mustbe recalibrated.The pressure transducer can be influenced by means of parameters in thevalve software. The parameters can be set or interrogated via the serviceor field bus interface in the valve software. Setting and interrogation canbe performed for example with the Moog Valve Configuration Software.



3.3.2 Valve configurations and hydraulic symbolsValve configurations Depending on the model, the following valve configurations are possible:

• 2-way operationChapter "3.3.2.2 2-way and 2x2-way operation", page 28

• 3-way operationChapter "3.3.2.1 4-way and 3-way operation", page 27

• 4-way operationChapter "3.3.2.1 4-way and 3-way operation", page 27

• 2x2-way operationChapter "3.3.2.2 2-way and 2x2-way operation", page 28

3.3.2.1 4-way and 3-way operation4-way and 3-way operation

With 4-way operation the valves can be used to control the flow in ports Aand B (used as throttle valves).

Port A or B must be blocked in order to obtain 3-way operation.

Leakage port Y must be used if the pressure in tank port T exceeds a value of50 bar (725 psi).

Chapter "3.3.3 Leakage port Y", page 28

The valves are available with zero lap, less than ±3 % or ±10 % positive over-lap.

Hydraulic symbols: 4-way and 3-way operation

Chapter "3.2.1.1 Valves with fail-safe function F, D or M", page 19

Figure 7: 4-way operation with mechanical fail-safe function M (hydraulic symbol)




3.3.2.2 2-way and 2x2-way operation2-way and 2x2-way operation

With 2-way and 2x2-way operation the valves can be used to control the flow inone direction (used as throttle valves).

With 2x2-way operation the valve can be used in 2-way applications for greaterflows. Ports P with B and A with T must be externally connected for this purpose.The direction of flow must be observed as per figure 10.

Chapter "3.2.1.1 Valves with fail-safe function F, D or M", page 19

3.3.3 Leakage port YLeakage port Y Leakage port Y must be used in the following cases:

• when the pressure pT in tank port T is greater than 50 bar (725 psi)• with 2x2-way operation

3.3.3.1 Y-identificationY-identification The Y-identification, i.e., the 7th position in the valve type designation, indi-

cates how leakage port Y is configured in the valve.Type designation: Chapter "3.7 Nameplate", page 40

Leakage port Y must always be connected with 2x2-way operation.Chapter "3.3.3 Leakage port Y", page 28


Figure 10: 2x2-way operation with mechanical fail-safe function M (hydraulic symbol)

The valve can be supplied either with or without leakage port Y. It is necessary when ordering the valve to establish whether leakageport Y is to be used.Whether leakage port Y is used can be ascertained from the Y-identifica-tion, i.e., the 7th position in the type designation.

Chapter "3.3.3.1 Y-identification", page 28

Type designation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

• • • • • • • • • • • • • • • • • • •

Ident. Leakage port Y Can be used at

0 Closed, with screw plug Pressure in tank port pT ≤ 50 bar (725 psi)

3 Open, with filter element Pressure in tank port pT > 50 bar (725 psi)

Table 8: Y-identification in the type designation

Y-identification



3.3.4 Electrical and hydraulic zero position

Electrical and hydraulic zero position of the spool

The electrical zero position of the spool is set if the command signal input forthe spool position is equal to zero.The hydraulic zero position is the position of the spool (when the spool is sym-metrical) in which the pressures are equal in the two blocked control ports.The hydraulic zero position is model-dependent.

Figure 11: Examples of the electrical and hydraulic zero position of different spools in the flow signal characteristic curve

Notes on the pressure controller control response (D639-R)

The controlled system is essentially influenced by:• Rated flow QN • Actual pressure difference ∆p per control land• Load stiffness• The fluid volume to be controlled in port A

Depending on differences in machine construction (such as volume, pipework,branching, accumulators), different pressure controller configurations may berequired in pressure control. The pressure controller configurations can be set or interrogated via the ser-vice or field bus interface in the valve software. Setting and interrogation can be performed for example with the Moog ValveConfiguration Software.Up to 16 pressure controller configurations can be stored and activated duringoperation.


WARNING The hydraulic zero position of the spool is not necessarilyidentical to the electrical zero position.

spool with zero lapspool with

positive overlap

command signal [%] command signal [%] command signal [%]

Q QN

------------

[%]

Q QN

------------

[%]

Q QN

------------

[%]

Item Designation

1 Electrical zero position of the spool

2 Hydraulic zero position of the spool

3 Spool overlap

3.3.5 Notes on the pressure controller control response (D639-R)

3 Product Description Control


3.4 ControlControl of the valves Valves without field bus interfaces must be controlled with analog command

signals via valve connector X1.Valves with field bus interfaces can be controlled either with analog commandsignals via valve connector X1 or with digital signals via the field bus interface(connectors X3 and X4).

Chapter "3.1.5 Signal interfaces", page 16Chapter "3.4.1 Signal types for analog command inputs", page 30

3.4.1 Signal types for analog command inputsAnalog command inputsValves without field bus interfaces must be controlled with analog command

signals via valve connector X1.Depending on the model, different signal types for analog command inputs forflow or pressure control can be set in the valve.The signal type can be set via the service or field bus interface in the valve soft-ware. Setting and interrogation can be performed for example with the MoogValve Configuration Software.


Advantages of the different signal types for analog command inputs

Basically, it is preferable to use differential signals on the command inputs. Ifthe command signal cannot be transmitted differentially, the reference point forthe command input at the valve must be connected to ground (GND).

Chapter "8.3.4 Single-ended command signals", page 76

Because current inputs have a lower input resistance than voltage inputs andare therefore less prone to interference, a current signal is preferable to a volt-age signal.


Signal types for command inputs Advantages

±10 V or 0–10 V Simple measurement of the signal, e.g., with an oscilloscope

±10 mA or 0–10 mA In contrast to the 4–20 mA signal type, less power is required with lowcommand signals; large transmission lengths are possible

4–20 mA Detection of fault in the electric cable and large transmission lengthsare possible

Table 9: Advantages of the different signal types for analog command inputs

It is necessary when ordering the valve to establish which signal type forthe analog command inputs is to be set in the valve on delivery.Which signal type has been set in the valve on delivery can be ascer-tained from the signal type identification, i.e., the 10th position in the typedesignation.

Chapter "3.4.1.1 Signal type identification", page 31Which signal type is currently set can be ascertained for example with theMoog Valve Configuration Software.

All current and voltage inputs are differential but can be connected toground (single-ended) by means of external wiring.



3.4.1.1 Signal type identificationSignal type identification The signal type identification, i.e., the 10th position in the valve type designa-

tion, indicates which signal type for the command inputs is set in the valve ondelivery.Type designation: Chapter "3.7 Nameplate", page 40

Type designation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

• • • • • • • • • • • • • • • • • • •

Ident. Explanation

M Analog command signals via differential voltage inputs:Flow control command input ±10 V and pressure control command input 0–10 VCircuit and characteristic curve: Figure 12, page 32 and Figure 15, page 35Pin assignment of valve connector X1: Figure 35, page 70 or

Figure 38, page 73

X Analog command signals via differential current inputs:Flow control command input ±10 mA and pressure control command input 0–10 mACircuit and characteristic curve: Figure 13, page 33 and Figure 16, page 36Pin assignment of valve connector X1: Figure 36, page 71 or

Figure 39, page 74

E Analog command signals via differential current inputs:Flow control command input 4–20 mA and pressure control command input 4–20 mACircuit and characteristic curve: Figure 14, page 34 and Figure 17, page 37Pin assignment of valve connector X1: Figure 37, page 72 or

Figure 40, page 75

9 Digital command signals via field bus interface

Table 10: Signal type identification in the type designation

signal type identification

The type designation and the signal type for analog command inputs onthe nameplate indicate the valve’s delivery status.By changing the valve configuration, it is possible to change the valve insuch a way that it no longer conforms to this status.Which signal type is currently set can be ascertained for example with theMoog Valve Configuration Software.



3.4.1.2 Flow control command inputs

Signal type for the command input: ±10 V

Differential flow control command input ±10 V

Figure 12: Differential flow control command input ±10 V (circuit and characteristic curve)

For this signal type the input is configured as a differential voltage input with aninput range of ±10 V.The spool stroke is proportional to the input voltage Uin.

The differential input resistance Rin is 20 kΩ.The input resistance referenced to GND is approximately 150 kΩ.

If there is no differential command input source available, the reference pointfor the command inputs must be connected to 0 V of the command inputsource (GND). The operating direction of the command signal can be altered by modifying theparameters of the valve software.

spoo

l stro

ke [%

]

command signal [V]

valve

Uin = 10 V 100 % spool stroke, valve opening: P A and B T

Uin = 0 V Spool in electrical zero position

Uin = –10 V 100 % spool stroke, valve opening: P B and A T

CAUTION The potential difference of each input to GND must be be-tween –15 V and 32 V.



Signal type for the command input: ±10 mA

Differential flow control command input ±10 mA

Figure 13: Differential flow control command input ±10 mA (circuit and characteristic curve)

For this signal type the input is configured as a differential current input with aninput range of ±10 mA.The input current Iin to be measured is guided through both input pins to an in-ternal current measuring shunt.The spool stroke is proportional to the input current Iin.

The differential input resistance Rin is 200 Ω.The input resistance referenced to GND is approximately 150 kΩ.


spoo

l stro

ke [%

]command signal [mA]

valve

Iin = 10 mA 100 % spool stroke, valve opening: P A and B T

Iin = 0 mA Spool in electrical zero position

Iin = –10 mA 100 % spool stroke, valve opening: P B and A T

CAUTION The input current Iin of the command inputs with current inputsignal must be between –25 mA and 25 mA!Voltage levels in excess of 5 V may cause the destruction ofthe integrated valve electronics.




Signal type for the command input: 4–20 mA

Differential flow control command input 4–20 mA

Figure 14: Differential flow control command input 4–20 mA (circuit and characteristic curve)

For this signal type the input is configured as a differential current input with aninput range of 4–20 mA.The input current Iin to be measured is guided through both input pins to an in-ternal current measuring shunt.The spool stroke is proportional to the input current Iin.



spoo

l stro

ke [%

]command signal [mA]

valve

Iin = 20 mA 100 % spool stroke, valve opening: P A and B T

Iin = 12 mA Spool in electrical zero position

Iin = 4 mA 100 % spool stroke, valve opening: P B and A T


CAUTION In the signal range 4–20 mA command signals Iin < 3 mA (e.g.,due to a faulty electric cable) indicate a fault. The valve response to this fault can be set and activated viathe service or field bus interface in the valve software. Settingand activation can be performed for example with the MoogValve Configuration Software.




3.4.1.3 Pressure control command inputs

Signal type for the command input: 0–10 V

Differential pressure control command input 0–10 V

Figure 15: Differential pressure control command input 0–10 V (circuit and characteristic curve)

For this signal type the input is configured as a differential voltage input with aninput range of 0–10 V.The pressure in control port A is proportional to the input voltage Uin.

The differential input resistance Rin is 20 kΩ.The input resistance referenced to GND is approximately 150 kΩ.

If there is no differential command input source available, the reference pointfor the command inputs must be connected to 0 V of the command inputsource (GND).

pres

sure

[%]

command signal [V]

valve

Uin = 10 V 100 % pressure in control port A

Uin = 0 V 0 % pressure in control port A





Differential pressure control command input 0–10 mA

Figure 16: Differential pressure control command input 0–10 mA (circuit and characteristic curve)

For this signal type the input is configured as a differential current input with aninput range of 0–10 mA.The input current Iin to be measured is guided through both input pins to an in-ternal current measuring shunt.The pressure in control port A is proportional to the input current Iin.



pres

sure

[%]

command signal [mA]

valve

Iin = 10 mA 100 % pressure in control port A







Differential pressure control command input 4–20 mA

Figure 17: Differential pressure control command input 4–20 mA (circuit and characteristic curve)

For this signal type the input is configured as a differential current input with aninput range of 4–20 mA.The input current Iin to be measured is guided through both input pins to an in-ternal current measuring shunt.The pressure in control port A is proportional to the input current Iin.



pres

sure

[%]

command signal [mA]

valve








3.4.2 Analog actual value outputs 4–20 mAAnalog actual value outputs

Depending on the model, the valve can be provided with different analog actualvalue outputs for flow and/or pressure control.

Pin assignment of valve connector X1: Chapter "8.3 Valve connector X1", page 69

Conversion of actual value output signals Iout from 4–20 mA into 2–10 V:Chapter "8.3.5 Conversion of actual value output signals Iout", page 77

The reference point for the 4–20 mA analog actual value outputs is GND.The load resistance RL must lie in the range of 0–150 Ω.

3.4.2.1 Spool position actual value outputSpool position actual value output 4–20 mA

The output current Iout is proportional to the spool position.

3.4.2.2 Pressure actual value outputPressure actual value output 4–20 mA

The output current Iout is proportional to the pressure in control port A.

3.4.3 Digital enable inputEnable input The valves are provided with a digital enable input.

The transition of the valve into the standby state or the fail-safe state can alsobe initiated by corresponding signals at the enable input of valve connector X1:

• Signals between 8.5 V and 32 V referenced to GND at the enable inputrender the valve to standby.

• Depending on the model, signals lower than 6.5 V at the enable input ren-der the valve in the mechanical or electrical fail-safe state.


Fail-safe state of the valves: Chapter "3.2 Safety function/fail-safe", page 18

When connecting the digital enable input to 24 V direct voltage, the input cur-rent of the digital enable input is 2.3 mA.

External detection of electric cable faults can be realized with the4–20 mA analog actual value outputs.

The 4–20 mA actual value outputs are short-circuit protected.

Iout = 20 mA 100 % spool stroke, valve opening: P A and B T

Iout = 12 mA Spool in electrical zero position

Iout = 4 mA 100 % spool stroke, valve opening: P B and A T

Iout = 20 mA 100 % pressure in control port A

Iout = 4 mA 0 % pressure in control port A

3 Product Description Valve software


3.5 Valve software

Valve software The valve software is an integral part of the valve and cannot be altered, cop-ied or replaced by the user.

Configuration of the valves

Many of the functions made available by the valve software can be configuredby the user by modifying parameters. For this purpose, the desired parametersmust be transferred to the valve via the service or field bus interface. Parame-ters can be modified by a suitable field bus node, for example by the machinecontroller.

Chapter "9.3 Configuration of the valves", page 83

The Moog Valve Configuration Software is available as an accessory to sim-plify start-up, diagnosis and configuration of the valves.


3.6 Moog Valve Configuration SoftwareMoog Valve Configuration Software

The Moog Valve Configuration Software is a Microsoft® Windows® applicationenabling fast and convenient start-up, diagnosis and configuration of thevalves.The Moog Valve Configuration Software communicates with the valves via theservice or CAN bus interface. A PC with a suitable interface card is required forthis purpose.

The Moog Valve Configuration Software offers the following functions:• Transfer of data between PC and valves• Storage of the current valve settings on the PC• Control of the valves with graphic software control elements• Graphic representation of status information, command signals and actual

values as well as characteristic curves for the valves• Recording and visualization of the system parameters with the integrated

data logger and the integrated oscilloscope function

WARNING Altering the configuration of the valve may change thefunction of the valve to such an extent that it will no longerfunction as specified in this user manual.


Incorrect configuration of the valves will result in dangerdue to:

• Uncontrolled sequences of motions• Destruction• Malfunction

If the valve is incorporated in a field bus, the parameters can be trans-ferred to the valve each time the system is powered up. This ensures that the valve always receives the correct configuration ofthe valve software.

The Moog Valve Configuration Software is available as accessories.Chapter "13.1 Accessories", page 105

3 Product Description Nameplate


3.7 NameplateNameplate

Figure 18: Nameplate (example)

Nameplate


1 Model number Chapter "3.7.1 Model number", page 41

2 Type designation Please refer to the D637-R/D639-R catalog for informa-tion on the individual positions in the type designation.

Chapter "1.2 Supplementing documents", page 3

3 Serial number

4 Maximum operating pressure Chapter "4.2 Hydraulic data", page 44

5 Not assigned

6 Signal type for analog command inputs

Chapter "3.4.1 Signal types for analog command in-puts", page 30

7 Supply voltage Technical data:Chapter "4.4 Electrical data", page 46

Pin assignment of valve valve connector X1:Figure 38, page 73 to Figure 40, page 75

8 Optional customer-specific designation

9 Optional version identification

10 Date of manufacture in MM/YY format

11 LSS address (decimal) Chapter "3.7.2 LSS address (Layer Setting Services)", page 41

12 Hydraulic symbol

13 Data matrix code Chapter "3.7.3 Data matrix code", page 41

14 Designation of ports Chapter "7.2.2 Mounting pattern of mounting surface", page 61

The type designation and the signal type for analog command inputs onthe nameplate indicate the valve’s delivery status.By changing the valve configuration, it is possible to change the valve insuch a way that it no longer conforms to this status.Which signal type is currently set can be ascertained for example with theMoog Valve Configuration Software.



3.7.1 Model numberModel number The model number is set out as follows:

Example: D637-R-1007-0001

3.7.2 LSS address (Layer Setting Services)LSS address The decimal LSS address is set out as per CiA DSP 305 as follows and serves

to provide the CAN bus node with an internationally unique identification:

Example: 40/424/1/4321

3.7.3 Data matrix codeData matrix code The data matrix code is a two-dimensional code. The code on the nameplate

contains a character string which is set out as follows:

If there is no optional version identification, a blank space appears here.

Example: D637-R-1007-0001#A#D4321

D637-R • • • • • − • • • •

series

specification status: - : standard specificationZ: special specification

model

optional factory identification

variant

40 / product code / variant without leading zeros / serial number without country identification

Chapter "3.7.1 Model number", page 41

Figure 18, page 40, item 3 manufacturer ID

Even valves without CAN bus interfaces are assigned a decimal LSSaddress during manufacturing.

model number # optional version identification # serial number with country identification

Chapter "3.7.1 Model number", page 41

Figure 18, page 40, item 7 Figure 18, page 40, item 3



For your notes.

4 Technical Data General technical data


4 Technical Data

4.1 General technical data

General technical data


WARNING Use of the valves in potentially explosive environments isnot permitted.

CAUTION The valves must not be immersed in liquids!

Version Servovalve

Mass Approx. 7.9 kg (17.4 lb)

Dimensions Chapter "7.1 Dimensions (installation drawings)", page 58

Installation position

In any position, fixed or moving; on valves with venting screws (D639-R): venting screw must point upwards

Observe the relevant safety instructions when mounting the valve.Chapter "7 Mounting and Connection to the Hydraulic System",

page 57

Permissible ambient conditions

Ambient temperature 1

1 The ambient temperature and the temperature of the hydraulic fluid influence the temperature ofthe valve electronics. In order to ensure that the electronic components integrated in the valvelast as long as possible, we recommend that the hydraulic fluid be kept at as low a temperatureas possible at as low an ambient temperature as possible. A reference temperature is measuredin the valve electronics. Fault-free operation is guaranteed up to a reference temperature of85 °C (185 °F). At reference temperatures over 85 °C (185 °F) a warning is output via the fieldbus on valves with field bus interfaces. At reference temperatures over 105 °C (221 °F) the valveelectronics are deactivated; the valve is rendered in the 'DISABLED' valve state and thereforethe mechanical fail-safe state.

Chapter "3.2 Safety function/fail-safe", page 18

For transportation/storage Recommended 15 °C to 25 °C (59 to 77 °F) 2

2 Temperature fluctuations > 10 °C (50 °F) must be avoided during storage.

Permissible –40 °C to 80 °C (–40 to 176 °F) 2

For operation –20 °C to 60 °C (–4 to 140 °F)

Rel. air humidity for storage < 65 % not condensing

Vibration resistance 3

3 Transportation and storage should be as vibration- and shock-free as possible.

30 g, 3 axes, frequency: 10 to 2000 Hz (as per DIN EN 60068-2-6)

Shock resistance 3 50 g, 6 directions, half-sine 3 ms (as per DIN EN 60068-2-27)

Table 11: General technical data

4 Technical Data Hydraulic data


4.2 Hydraulic data

Valve construction type Spool valve, one-stage, with bushing

Actuation Directly with permanent magnet linear force motor

Pilot oil supply None

Nominal size and mounting pattern

NG10, mounting pattern as per ISO 4401-05-05-0-05, with or without leakage port YChapter "3.3.3 Leakage port Y", page 28Chapter "7.2.2 Mounting pattern of mounting surface", page 61

Diameter of ports 11.5 mm (0.45 in)Chapter "7.2.2 Mounting pattern of mounting surface", page 61

Sealing material NBR, FKM, others on request

Valve configurations 2-way, 3-way, 4-way and 2x2-way operationChapter "3.3.2 Valve configurations and hydraulic symbols", page 27

Overlap Zero lap, less than ±3 % or ±10 % positive overlap (model-dependent)

Max. flow Qmax 180 l/min (48 gpm) Chapter "5.1 Flow diagram (4-way operation)", page 49

Rated flow QN 60/100 l/min (16/26 gpm) (model-dependent) (at ∆pN = 35 bar (508 psi) per control land: tolerance ±10 %)

Max. leakage flow QL1 1.2/2 l/min (0.3/0.5 gpm) (model-dependent)

Maximum operating pressure Ports P and B 350 bar (5,075 psi)

Port A (for D637-R) 350 bar (5,075 psi)

Port A (for D639-R) Dependent on pressure transducer, max. 350 bar (5,075 psi)Chapter "4.2.1 Pressure range identification", page 45

Port T, T1 without Y 50 bar (725 psi) Chapter "3.3.3 Leakage port Y", page 28

Port T, T1 with Y 350 bar (5,075 psi)

Port Y Depressurized to tank

Linearity of pressure control (D639-R only)

< 0.5 % of the maximum operating pressure in port AChapter "4.2.1 Pressure range identification", page 45

Hydraulic fluid Permissible fluids Mineral-oil-based hydraulic oil as per DIN 51524-1 to DIN 51524-3Other fluids on request

Permissible temperature 2 –20 to 80 °C (–4 to 176 °F)

Viscosity ν Recommended 15 to 100 mm²/s

Permissible 5 to 400 mm²/s

Cleanliness level, recommended (ISO 4406)

For functional safety < 18/15/12

For life cycle (wear and tear) < 17/14/11

The cleanliness of the hydraulic fluid greatly influences the functional safety (safe positioningof the spool, high resolution) and the wear (control lands, pressure gain, leakage losses) ofthe valves. To avoid malfunctions and increased wear, we recommend that the hydraulic fluidbe filtered accordingly.

Table 12: Hydraulic data

1 Typical values (measured at operating pressure pP = 140 bar (2,030 psi), viscosity of hydraulic fluid ν = 32 mm2/s and temperature ofhydraulic fluid T = 40 °C (104 °F))

2 The ambient temperature and the temperature of the hydraulic fluid influence the temperature of the valve electronics. In order to en-sure that the electronic components integrated in the valve last as long as possible, we recommend that the hydraulic fluid be kept atas low a temperature as possible at as low an ambient temperature as possible. A reference temperature is measured in the valveelectronics. Fault-free operation is guaranteed up to a reference temperature of 85 °C (185 °F). At reference temperatures over 85 °C(185 °F) a warning is output via the field bus on valves with field bus interfaces. At reference temperatures over 105 °C (221 °F) thevalve electronics are deactivated; the valve is rendered in the 'DISABLED' valve state and therefore the mechanical fail-safe state.

Chapter "3.2 Safety function/fail-safe", page 18

4 Technical Data Static and dynamic data


4.2.1 Pressure range identificationPressure range identification

The pressure range identification, i.e., the 3rd position in the valve type desig-nation, indicates what maximum operating pressure is permissible in port A.Type designation: Chapter "3.7 Nameplate", page 40

The pressure controlled with a pressure command of 100 % in port A can, de-pending on the application, deviate from the maximum operating pressure andbe set by the customer.

4.3 Static and dynamic dataStatic and dynamic data

Type designation:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

• • • • • • • • • • • • • • • • • • •

Series

D637-R D639-R

Ident. Maximum operating pressure in port A Q p pQ

W 25 bar (363 psi) • •

V 100 bar (1,450 psi) • •

U 160 bar (2,320 psi) • •

T 250 bar (3,625 psi) • •

K 350 bar (5,075 psi) • • •

X Special version • •

Table 13: Pressure range identification in the type designation

pressure range identification

Step response time for 0 to 100 % spool stroke1

15 ms (in Q-control)Chapter "5.4 Step response and frequency response", page 52

Hysteresis 1

1 Typical values (measured at operating pressure pP = 140 bar (2,030 psi), viscosity of hydraulicfluid ν = 32 mm2/s and temperature of hydraulic fluid T = 40 °C (104 °F))

In Q-control < 0.05 %, max. 0.1 %

In p-control Depending on controller optimization

Zero shift (typical) < 1.5 % at ∆T = 55 K (in Q-control)

Table 14: Static and dynamic data

4 Technical Data Electrical data


4.4 Electrical dataElectrical dataProtection type IP65 with mounted mating connectors or with mounted dust protection caps

with sealing function (as per DIN EN 60529)

EMC protection requirements

Immunity to interference as per DIN EN 61000-6-2:2005 (evaluation criterion A)With SELV/PELV power supply (order number: D137-003-001):immunity to interference as per DIN EN 55011:2003Emitted interference as per DIN EN 61000-6-4:2005 (CAN bus and Profibus DP) or as per DIN EN 61000-6-3:2005 (EtherCAT)

Chapter "4.4.1 Electromagnetic compatibility (EMC)", page 47

Supply voltage Nominal 24 V (18–32 V) DC referenced to GND, recommended: SELV/PELV power supply as per EN 60204-1 At supply voltages less than 18 V, the valve is rendered in the fail-safe state.

Chapter "3.2.3 Fail-safe events", page 21

External fuse protection for each valve

3.15 A slow-blowing fuse

Duty cycle 100 %

Valve connec-tor X1

6+PE- or 11+PE-pin connector with pin contacts (as per DIN EN 175201-804)

Chapter "8.3 Valve connector X1", page 69

Power consumption

Pmin (motor in neutral position) 9.6 W at I = 0.4 A 1

1 Current consumption I and Imax measured at ambient temperature TA = 25 °C (77 °F) and supplyvoltage U = 24 V DC

Pmax (at maximum flow) 67.2 W at Imax = 2.8 A 1 (for valves with QN = 60 l/min (16 gpm))

36 W at Imax = 1.5 A 1 (for valves with QN = 100 l/min (26 gpm))

Inputs/outputs Command input 0–10 V Rin = 20 kΩ

Command input ±10 V Rin = 20 kΩ

Command input 0–10 mA Rin = 200 Ω

Command input ±10 mA Rin = 200 Ω

Command input 4–20 mA Rin = 200 Ω

Actual value output 4–20 mA RL = 0–500 Ω to GND

Enable input Signals between 8.5 V and 32 V referencedto GND at the enable input render the valveto standby. Depending on the model, signals lower than6.5 V at the enable input render the valve inthe mechanical or electrical fail-safe state.


Table 15: Electrical data

4 Technical Data Emissions


4.4.1 Electromagnetic compatibility (EMC)Electromagnetic compatibility (EMC)

The valves satisfy the EMC protection requirements for immunity to interfer-ence as per DIN EN 61000-6-2:2005 (evaluation criterion A).When the SELV/PELV power supply (order number: D137-003-001) is used aspower supply, the valves satisfy the EMC protection requirements for immunityto interference as per DIN EN 55011:2003.The valves satisfy the EMC protection requirements for emitted interference asper DIN EN 61000-6-4:2005 (CAN bus and Profibus DP) or as perDIN EN 61000-6-3:2005 (EtherCAT).

The following technical requirements must be in place so that the EMC protec-tion requirements can be satisfied:

• Use of the mating connectors recommended for the valvesChapter "13.1 Accessories", page 105

• Adequate shielding• Design of equipotential bonding system, protective grounding and electri-

cal shielding as per "TN 353"

4.5 EmissionsEnvironmental protection: Emissions

Generally speaking, the valves do not generate harmful emissions when theyare used for their intended purpose.

WARNING The magnets in the permanent magnet linear force motorcreate strong magnetic fields, which can have a disruptiveeffect on sensitive devices, such as e.g., cardiac pace-makers. The relevant safe distances appropriate for thedevice must be observed.

CAUTION Depending on the application, significant levels of noise maybe generated when the valves are operated. If necessary, the manufacturer and operator of the machinemust take appropriate sound insulation measures or stipulatethat suitable safety equipment, such as e.g., ear protection, beworn.

4 Technical Data Emissions


For your notes.

5 Characteristic Curves Flow diagram (4-way operation)


5 Characteristic Curves

5.1 Flow diagram (4-way operation)Flow diagram (4-way operation)

Figure 19: Flow diagram (4-way operation)

The flow that is set depends not only on the spool position but also on the pres-sure difference ∆p at the individual control lands.

Formula for calculating the flow Q

A flow control command signal of 100 % produces with a rated pressure differ-ence of ∆pN = 35 bar (508 psi) per control land the rated flow QN. If the pres-sure difference is altered, the flow Q also changes with a constant commandsignal in accordance with the following formula:

Chapter "3.3.1.1 Flow control (Q-control)", page 24

flow

Q [l

/min

(gpm

)]

valve pressure difference ∆p [bar (psi)]

rated pressure difference ∆pN= 70 bar (1,015 psi)(i.e., ∆pN = 35 bar (508 psi) per control land)

Qmax = 180 l/min(48 gpm)

Q [l/min (gpm)] : actual flowQN [l/min (gpm)] : rated flow∆p [bar (psi)] : actual pressure difference per control land∆pN [bar (psi)] : rated pressure difference

∆pN = 35 bar (508 psi) per control land

Q QN∆p∆pN--------------⋅=

To avoid cavitation, the flow speed of the actual flow Q calculated in thisway at ports (A, B, P, T, etc.) must not be too great.In typical applications the maximum permissible flow speed is 30 m/s(approx. 100 ft/s).

5 Characteristic Curves Flow signal characteristic curve


5.2 Flow signal characteristic curve 1

Flow signal characteristic curve

5.3 Pressure signal characteristic curves 1

5.3.1 Valves with controlled spool position

Pressure signal characteristic curve of the valves with controlled spool position and zero lap

1 Typical characteristic curves (measured at operating pressure pP = 140 bar(2,030 psi), viscosity of hydraulic fluid ν = 32 mm2/s and temperature of hy-draulic fluid T = 40 °C (104 °F))

command signal [%]

Figure 20: Flow signal characteristic curve with equal electrical and hydraulic zero position

Figure 21: Setup for measuring the flow signal characteristic curve

Q QN

------------

[%]

command signal [%]

Figure 22: Pressure signal characteristic curve of the valves with controlled spool position

and zero lap

Figure 23: Setup for measuring the pressure signal characteristic curve

on valves with controlled spool position

∆p A

B

p P-----------------

[%]

5 Characteristic Curves Pressure signal characteristic curves 1


5.3.2 Pressure control valves

Pressure signal characteristic curve of the pressure control valves

command signal [%]

Figure 24: Pressure signal characteristic curve of the pressure control valves

Figure 25: Setup for measuring the pressure signal characteristic curve

on pressure control valves

p A p N---------- [

%]

5 Characteristic Curves Step response and frequency response


5.4 Step response and frequency response 1

Step response of the spool stroke

Figure 26: Step response of the spool stroke for valves with QN = 60 l/min (16 gpm)

Figure 27: Step response of the spool stroke for valves with QN = 100 l/min (26 gpm)

1 Typical characteristic curves (measured at operating pressure pP = 140 bar(2,030 psi), viscosity of hydraulic fluid ν = 32 mm2/s and temperature of hy-draulic fluid T = 40 °C (104 °F))

spoo

l stro

ke [%

]

time [ms]

spoo

l stro

ke [%

]

time [ms]



Frequency response of the spool stroke

Figure 28: Frequency response of the spool stroke for valves with QN = 60 l/min (16 gpm)

Figure 29: Frequency response of the spool stroke for valves with QN = 100 l/min (26 gpm)

ampl

itude

ratio

[dB

]

frequency [Hz]

phas

e la

g [d

egre

es]

ampl

itude

ratio

[dB

]

frequency [Hz]

phas

e la

g [d

egre

es]



For your notes.

6 Transportation and Storage


6 Transportation and StorageSafety instructions: Transportation and storage

WARNING The permissible ambient conditions for the valves mustbe maintained at all times including transportation andstorage.

Chapter "4 Technical Data", page 43The valves must be protected in particular to prevent entryof dust and moisture.Fault-free, reliable and safe operation cannot be guaranteed ifthe above requirements are not observed.

WARNING The valves must not be transported or stored without theirshipping plate mounted.This is the only way of adequately protecting the valvesagainst the ingress of dirt and moisture and protecting theseals against the effects of ozone and UV.

CAUTION To provide protection against injuries or other damaging influ-ences on health, suitable protective measures must be taken ifnecessary prior to and when carrying out any work on thevalves or the machine, such as e.g., mounting or removing,electrical or hydraulic connection, troubleshooting or servicing,and when handling the valves, accessories, tools or hydraulicfluids.

Chapter "2.6 Occupational safety and health", page 9

CAUTION The valve shipping plate may only be removed from the valvehydraulic ports directly prior to mounting and must be re-mounted directly after the valve has been removed. This is theonly way of adequately protecting the valves against the in-gress of dirt and moisture and protecting the seals against theeffects of ozone and UV.The shipping plate and the associated fastening elements(screws and nuts) must be kept for later use, e.g., during trans-portation.

CAUTION Do not misuse the connectors, mating connectors (plugs) andconnection cables of the valves, e.g., as a tread or transportfixture.

CAUTION To avoid condensation after the valves have been transportedor stored, wait until they have reached the ambient tempera-ture before starting up the valves.

CAUTION To avoid damage, always transport or store valves, spare partsand accessories only in the properly sealed original packaging.

CAUTION After transporting or storing valves, spare parts and accesso-ries, check the original packaging and contents for possibledamage.Do not start up the system if the packaging or contents showsigns of damage. In this case, immediately notify us or the re-sponsible supplier.In the event of transportation damage, store the damagedpackaging so that if necessary damages can be claimed fromthe transport contractor.

6 Transportation and Storage Unpacking/checking a delivery


6.1 Unpacking/checking a deliveryUnpacking/checking a delivery

Procedure:

1. Check whether the packaging is damaged.

2. Remove the packaging.

3. Store the damaged packaging so that if necessary damages can beclaimed from the transport contractor.We recommend that you also keep the undamaged original packaging forlater transportation or storage operations.

4. Dispose of the packaging material no longer needed in accordance withthe relevant national waste disposal regulations and environmental pro-tection provisions.

5. Check whether the packaging contents is damaged.

6. In the event of damaged packaging or damaged contents, immediatelynotify us or the responsible supplier.

7. Check whether the delivery corresponds to the order and the deliverynote.

8. In the event of wrong or incomplete delivery, immediately notify us or theresponsible supplier.

6.2 Scope of delivery of the valveScope of delivery of the valve

The scope of delivery of the valve consists of:• Valve with mounted oilproof shipping plate at the hydraulic port• 5 O-rings ID 12.4 x Ø 1.8 [mm] (ID 0.488 x Ø 0.071 [in])

for ports A, B, P, T and T1

• 2 O-rings ID 15.6 x Ø 1.8 [mm] (ID 0.614 x Ø 0.071 [in])for port Y and O-ring recess X

6.3 StorageEffects of long-term storage

The following effects may occur in the course of long-term storage:• Sealing materials become brittle, possibly resulting in leaks• Hydraulic fluid becomes gummy, possibly resulting in friction

In order to avoid possible resulting impairments or damage, we recommendthat the valve, after a period of storage or operation of more than 5 years, beinspected by us or one of our authorized service centers.

7 Mounting and Connection to the Hydraulic System


Safety instructions: Mounting and Connection to the Hydraulic System

7 Mounting and Connection to the Hydraulic SystemWARNING During operation, do not carry out any work, such as e.g.,

mounting or removal, electrical or hydraulic connection,troubleshooting or servicing, on the valves or the ma-chine.Failure to comply with this requirement results in danger dueto:

• Hydraulic fluid squirting out under pressure• Uncontrolled sequences of motions• Destruction• Malfunction

Before working on the valves or the machine, shut downand switch off the machine without fail and de-energizeand depressurize the machine.For this purpose, switch off the supply voltage of the valves aswell as the supply voltage of the connected peripherals, suchas e.g., externally powered transducers or programming units.Secure the machine without fail against restarting.Examples of suitable securing measures:

• Lock the main command device and remove the key• Attach a warning sign to the master switch

WARNING Hydraulic fluid squirting out under high pressure cancause serious personal injuries, burns and fires.Depressurize all hydraulic lines and accumulators in the hy-draulic circuit before mounting or removing, electrical or hy-draulical connection, start-up, troubleshooting or servicing.





7 Mounting and Connection to the Hydraulic System Dimensions (installation drawings)


7.1 Dimensions (installation drawings)

7.1.1 Valves with CAN bus interface

+ Removal room for the mating connector of the 6+PE-pin valve connector X1Chapter "3.1.5.1 Valve connector X1", page 16

++ Removal room for the mating connector of the 11+PE-pin valve connector X1Chapter "3.1.5.1 Valve connector X1", page 16

# Dimension for the mating connector of the 6+PE-pin valve connector X1## Dimension for the mating connector of the 11+PE-pin valve connector X1

* Removal room for the mating connector of the field bus connectors X3 and X4Chapter "3.1.5.2 Field bus connectors X3 and X4", page 17Chapter "9.3.1 Configuration via the field bus interface", page 83



2 Nameplate Chapter "3.7 Nameplate", page 40

3 Installation screw or attachment screw of the shipping plate

Chapter "7.3.2 Specification for installation screws", page 62Chapter "7.2.2 Mounting pattern of mounting surface", page 61

Figure 30: Installation drawing for valves with CAN bus interface, dimensions in mm (inches)

Hydraulic symbols: Chapter "3.3.2 Valve configurations and hydraulic symbols", page 27Procedure for mounting the valve: Chapter "7.3.3 Procedure", page 62Position of the ports: Chapter "7.2.2 Mounting pattern of mounting surface", page 61



7.1.2 Valves with Profibus or EtherCAT interface




* Removal room for the mating connector of the field bus connectors X3 and X4Chapter "3.1.5.2 Field bus connectors X3 and X4", page 17Chapter "9.3.1 Configuration via the field bus interface", page 83

** Removal room for the adapter of the service connector X10Chapter "3.1.5.3 Service connector X10", page 17Chapter "9.3.2 Configuration via the service interface", page 85






Figure 31: Installation drawing for valves with Profibus or EtherCAT interface, dimensions in mm (inches)




7.1.3 Valves without field bus interface




* Removal room for the adapter of the service connector X10Chapter "3.1.5.3 Service connector X10", page 17Chapter "9.3.2 Configuration via the service interface", page 85






Figure 32: Installation drawing for valves without field bus interface, dimensions in mm (inches)


7 Mounting and Connection to the Hydraulic System Mounting surface


7.2 Mounting surface

7.2.1 Surface qualityEvenness and roughness of the mounting surface

7.2.2 Mounting pattern of mounting surface

Mounting pattern of mounting surface

Figure 33: Mounting pattern of mounting surface as per ISO 4401-05-05-0-05, dimensions in mm (inches)

If the valve is mounted on the mounting surface, it projects over themounting surface.Valve dimensions:

Chapter "7.1 Dimensions (installation drawings)", page 58

Evenness as per DIN EN ISO 1302: < 0.01 mm (0.00039 in) over 100 mm (3.94 in)

Average surface finish Ra as per DIN EN ISO 1302: < 0.8 µm (0.000030 in)

CAUTION Contrary to ISO 4401-05-05-0-05 the length of the mountingsurface must be at least 100 mm (3.94 in) so that the requiredO-ring recesses can be covered on ports X and Y.

O-ring recesses in the valve body Ø = 18.7 (0.74)

P A TT1

optional B F1 F2 F3 F4 X Y

Ø 11.2(0.44)

Ø 11.2(0.44)

Ø 11.2(0.44)

Ø 11.2(0.44)

Ø 11.2(0.44)

M6 M6 M6 M6 - Ø 6.3(0.25)

x 27(1.06)

16.7(0.66)

3.2(0.13)

50.8(2.00)

37.3(1.47)

0 54(2.13)

54(2.13)

0 - 62(2.44)

y 6.3(0.25)

21.4(0.84)

32.5(1.28)

32.5(1.28)

21.4(0.84)

0 0 46(1.81)

46(1.81)

- 11(0.43)

7 Mounting and Connection to the Hydraulic System Mounting the valves


7.3 Mounting the valves7.3.1 Tools and materials required

Tools and materials required for mounting the valves

The following tools and materials are required for mounting the valves:• Flat-bladed screwdriver 8x1.6 [mm] and if necessary open-ended

wrench WAF 10(for removing the shipping plate)

• Torque wrench for hexagon socket head cap screws WAF 5(for mounting the valve)

• Installation screwsChapter "7.3.2 Specification for installation screws", page 62

• If necessary, spare port O-ringsChapter "13.2 Spare parts", page 107

7.3.2 Specification for installation screws

Specification for installation screws

7.3.3 Procedure

Safety instructions: Mounting the valves

The installation screws and spare O-rings are not included in the valves’scope of delivery. They are available as accessories.

Chapter "13.1 Accessories", page 105

Hexagon socket head cap screws as per DIN EN ISO 4762

Quality class

Number required Tightening torque

M6x60 10.9 4 11 Nm (8.1 lbf ft) ± 10 %

Table 16: Specification for installation screws

WARNING Use the installation screws specified here for mountingthe valve. The shipping plate attachment screws must notunder any circumstances be used to mount the valve. Se-cure valve mounting cannot be guaranteed in such a case.Specification for installation screws: Table 16, page 62


CAUTION To prevent the valve from overheating, mount the valve so asto ensure adequate ventilation.Do not mount the valve directly on machine parts which are ex-posed to strong vibrations or sudden movement.On units that are moved in jerks and jolts, the movement direc-tion of the spool should not be the same as the movement di-rection of the unit.



Procedure for mounting the valves

Procedure:

1. Clean the valve connecting surface and the mounting surface.Check and if necessary correct the evenness and roughness of themounting surface.

Chapter "7.2.1 Surface quality", page 61

2. Remove the shipping plate from the valve’s hydraulic port. The shipping plate and the associated fastening elements (screws andnuts) must be kept for later use, e.g., during transportation.

3. Check for presence, elasticity, integrity and correct seating of the O-ringsin the valve ports (A, B, P, T, etc.).If necessary, install O-rings, replace or correct the seating.

4. Paying attention to the mounting pattern, place the valve on the mountingsurface and align it with the mounting bores.

5. Secure the valve. To do so, tighten the installation screws (hexagonsocket head cap screws) free from distortion in diagonal sequence.Tightening torque: 11 Nm (8.1 lbf ft) ± 10 %

Chapter "7.3.2 Specification for installation screws", page 62

CAUTION Mount the valves with venting screw (D639-R) in such a waythat they can be vented. In order to allow air that may be con-tained in the valve to escape after the venting screw is opened,make sure the venting screw points upwards.

Chapter "9.5.1 Venting", page 87Position of the venting screw: Figure 1, page 12

CAUTION The valve connecting surface and the mounting surface mustbe free of residues and dirt when the valve is about to bemounted.Use a clean, soft and fluff-free cloth to clean the connectingand mounting surfaces. Do not use cleaning wool. Do not useany cleaning agents or methods which could attack the sur-faces or the O-rings mechanically or chemically.



For your notes.

8 Electrical Connection


8 Electrical ConnectionSafety instructions: Electrical Connection

WARNING During operation, do not carry out any work, such as e.g.,mounting or removal, electrical or hydraulic connection,troubleshooting or servicing, on the valves or the ma-chine.Failure to comply with this requirement results in danger dueto:







WARNING Touching electrically live parts exposes the user/operatorto the risk of:

• Electric shock• Uncontrolled sequences of motions• Destruction• Malfunction

Touching electrically live parts must therefore be avoided!

8 Electrical Connection





CAUTION Do not lay valve connection cables in the immediate vicinity ofhigh-voltage cables or together with cables that switch induc-tive or capacitive loads.

CAUTION The protective earth connection is connected to the valve elec-tronics housing or valve body.The insulation materials employed are designed for use in thesafety extra-low-voltage range.The circuits of the field bus connections, if provided, are onlyfunctionally galvanically isolated from the other connected cir-cuits.To comply with safety regulations requires isolation from themains as per EN 61558-1 and EN 61558-2-6 and limiting allvoltages as per EN 60204-1.We recommend using SELV/PELV power supplies.Electrical connections must be conducted in compliance withEMC requirements.

CAUTION Dirt or moisture can get into the valve through open connec-tors, i.e., if no mating connector is attached, which may resultin damage to the valve.Open connectors must be covered and sealed.The plastic dust protection cap which is attached to serviceconnector X10 on delivery is suitable for use as sealing cover.The plastic dust protection caps which are attached to field busconnectors X3 and X4 on delivery are not suitable for use assealing covers.Suitable metallic dust protection caps for field bus connectorsX3 and X4 are available as accessories.


8 Electrical Connection Wiring


8.1 Wiring8.1.1 Tools and materials required

Tools and materials required for electrically connecting the valves

The following are required for electrically connecting the valves:• Mating connector of valve connector X1

(6+PE- or 11+PE-pin depending on model)• Connection cables for mating connector• Crimping tool for mating connector• Installation tool• Tool insert for crimping tool

8.1.2 Electrical connection of the valvesProcedure for electrically connecting the valves

Procedure:

1. Conduct electrical connection in accordance with the pin assignment. Chapter "8.3 Valve connector X1", page 69

2. Establish equipotential bonding, protective grounding and shielding as per"TN 353" and "TN 494".

3. For valves with field bus interface: carry out field bus wiring.

4. Check whether all of the connectors to which no mating connector is at-tached are covered with a suitable dust protection cap.If necessary, attach a dust protection cap.

The above-mentioned connectors, cables and tools are not included in thevalves’ scope of delivery. They are available separately.

Chapter "13 Accessories and Spare Parts", page 105

8 Electrical Connection Arrangement of the connectors


8.2 Arrangement of the connectorsArrangement of the connectors on the valve electronics housing

Figure 34: Arrangement of the connectors on the valve electronics housing (maximum equipment specification)

Item X Further information

1 X5…X7 The analog input connectors X5…X7 are only provided on valves with axiscontrol function (ACV).

2 X4 The field bus connectors X3 and X4 are only provided on valves with field businterfaces.

Chapter "3.1.5.2 Field bus connectors X3 and X4", page 17Chapter "9.3.1 Configuration via the field bus interface", page 83

3 X3

4 X2 The digital signal interface connector X2 is only provided on valves with axiscontrol function (ACV).

5 X1 Chapter "3.1.5.1 Valve connector X1", page 16

6 X10 The service connector X10 is only provided on valves without CAN bus inter-faces.

Chapter "3.1.5.3 Service connector X10", page 17Chapter "9.3.2 Configuration via the service interface", page 85

8 Electrical Connection Valve connector X1


8.3 Valve connector X1Valve connector X1

Detailed information on the individual command inputs:Chapter "3.4.1 Signal types for analog command inputs", page 30

Basically, it is preferable to use differential signals on the command inputs. Ifthe command signal cannot be transmitted differentially, the reference point forthe command input at the valve must be connected to ground (GND).

Chapter "8.3.4 Single-ended command signals", page 76

8.3.1 Mating connector of valve connector X1

Mating connector of valve connector X1

CAUTION At the differential command inputs (pins D and E for 6+PE orpins 4, 5 and 7 for 11+PE) the potential difference (measuredto pin B for 6+PE or pin 10 for 11+PE) must be between –15 Vand 32 V.



All current and voltage inputs are differential but can be connected toground (single-ended) by means of external wiring.

The mating connector of valve connector X1 is available as accessories.Chapter "13.1 Accessories", page 105



8.3.2.1 Differential voltage inputs ±10 V and 0–10 V

6+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (signal type identification: M)

Figure 35: 6+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (circuit and pin assignment)

8.3.2 Pin assignment of the 6+PE-pin valve connector X1

valve

view of valve connector X1

Pin Assignment Description

A Supply voltage Nominal 24 V (18–32 V) DC referenced to GND

B GND Supply zero or signal zero

C Enable input 8.5–32 V referenced to GND: valve on standby< 6.5 V referenced to GND: fail-safe state of the valve


D Command input Uin = ±10 V or Uin = 0–10 VRin = 20 kΩ

E Reference point for the command input

F Actual value output Iout = 4–20 mA referenced to GND (Iout is proportional to the spoolposition or the controlled pressure (for D639-R); the output is short-circuit protected); RL = 0–500 Ω to GND

Chapter "8.3.5 Conversion of actual value output signals Iout", page 77

PE Protective earth contact

Leading contactConnect protective grounding as per "TN 353"



8.3.2.2 Differential current inputs ±10 mA and 0–10 mA

6+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (signal type identification: X)

Figure 36: 6+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (circuit and pin assignment)

valve







D Command input Iin = ±10 mA or Iin = 0–10 mARin = 200 Ω








8.3.2.3 Differential current inputs 4–20 mA

6+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (signal type identification: E)

Figure 37: 6+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (circuit and pin assignment)

valve







D Command input Iin = 4–20 mARin = 200 Ω








8.3.3.1 Differential voltage inputs ±10 V and 0–10 V

11+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (signal type identification: M)

Figure 38: 11+PE-pin valve connector X1 of valves with differential voltage inputs ±10 V and 0–10 V (circuit and pin assignment)

8.3.3 Pin assignment of the 11+PE-pin valve connector X1


valve


1 Not assigned

2 Not assigned

3 Enable input 8.5–32 V referenced to GND: valve on standby< 6.5 V referenced to GND: fail-safe state of the valve


4 Flow control command input

Uin = ±10 V (pin 5 is reference point for pins 4 and 7)Rin = 20 kΩ

5 Reference point for command inputs

Reference point for pins 4 and 7

6 Spool position actual value output

Iout = 4–20 mA referenced to GND (Iout is proportional to the spool position; the output is short-circuit protected); RL = 0–500 Ω to GND


7 Pressure control command input

Uin = 0–10 V (pin 5 is reference point for pins 4 and 7)Rin = 20 kΩ

8 Pressure actual value output

Iout = 4–20 mA referenced to GND (Iout is proportional to the con-trolled pressure; the output is short-circuit protected); RL = 0–500 Ω to GND


9 Supply voltage Nominal 24 V (18–32 V) DC referenced to GND

10 GND Supply zero or signal zero

11 Not assigned No function! Do not connect!





8.3.3.2 Differential current inputs ±10 mA and 0–10 mA

11+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (signal type identification: X)

Figure 39: 11+PE-pin valve connector X1 of valves with differential current inputs ±10 mA and 0–10 mA (circuit and pin assignment)


valve


1 Not assigned

2 Not assigned




Iin = ±10 mA (pin 5 is common feedback for pins 4 and 7)Rin = 200 Ω


Common feedback for pins 4 and 7





Iin = 0–10 mA (pin 5 is common feedback for pins 4 and 7)Rin = 200 Ω











8.3.3.3 Differential current inputs 4–20 mA

11+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (signal type identification: E)

Figure 40: 11+PE-pin valve connector X1 of valves with differential current inputs 4–20 mA (circuit and pin assignment)


valve


1 Not assigned

2 Not assigned






Common feedback for pins 4 and 7
















8.3.4 Single-ended command signalsBasically, it is preferable to use differential signals on the command inputs. Ifthe command signal cannot be transmitted differentially, the reference point forthe command input at the valve must be connected to ground (GND).

Circuit for single-ended command signals

Figure 41: Circuit for single-ended command signals

Single-ended connection of the command inputs

If the command inputs are connected to ground (single-ended), the connectioncable must be as short as possible and have an appropriately large cross sec-tion in order to keep the voltage drop as low as possible. The voltage drop on the forward and return lines is generated by the supplycurrent Isupply of the valve electronics power element. It is proportional to thelength of the connection cable and varies according to the valve status.

Input voltage Uin = Ucommand – Ucable

The voltage drop Ucable on the return line results in a potential shift of ground(GND). Thus, the input voltage Uin is applied at the command input and not thecommand signal Ucommand. The input voltage Uin is calculated in accordancewith the following formula:

Uin = Ucommand – Ucable

Command signal sources with impressed current Icommand

In the case of command signal sources with impressed current Icommand, thepotential shift of ground (GND) has no effect on the signal. However, changesin the voltage drop resulting from the valve’s varying current consumption mustbe corrected by the command signal source. If current control does not followthe voltage change in terms of time, the command signal at the valve input mayalso be affected here.

Please refer to "TN 494" for detailed information on maximum permissiblecable lengths.

The function of single-ended command inputs is identical to the function ofdifferential command inputs.

Chapter "3.4.1.2 Flow control command inputs", page 32Chapter "3.4.1.3 Pressure control command inputs", page 35



8.3.5 Conversion of actual value output signals IoutConversion of actual value output signals Iout (4–20 mA) into 2–10 V

The actual value output signals Iout (4–20 mA) can be converted into 2–10 V inaccordance with the following circuit.

8.3.5.1 Valves with 6+PE-pin valve connector X1

Figure 42: Circuit for converting the actual value output signals Iout (for valves with 6+PE-pin valve connector X1)

8.3.5.2 Valves with 11+PE-pin valve connector X1

Figure 43: Circuit for converting the actual value output signals Iout (for valves with 11+PE-pin valve connector X1)

valve RL = 500 Ω (0.25 W)

actual value, pin FUout = 2–10 V

valve RL = 500 Ω (0.25 W)

actual value, pin 8Uout = 2–10 V

actual value, pin 6Uout = 2–10 V



For your notes.

9 Start-up


9 Start-upSafety instructions: Start-up





DANGER Operating machines with damaged or defective compo-nents or with a leaking hydraulic system is dangerous andnot permitted.Before starting up or operating the valve, check the superordi-nated machine including all its installed components for dam-age and defects.Pay particular attention here to superordinated and hydraulicsafety devices, such as e.g., EMERGENCY STOP pushbut-tons and pressure-limiting valves.In addition, to avoid damage or leaks, perform the followingtasks at regular intervals in accordance with the instructions ofthe manufacturer and the operator of the machine:

• Checking the valve and the hydraulic system for exter-nally identifiable damage and defects.

• Checking for loose plugs/connectors.• Checking the cleanliness level of the hydraulic fluid.• Checking the port O-rings for elasticity, integrity and cor-

rect seating.Chapter "11.2.1 Checking and replacing the port

O-rings", page 96Report damage or defects to the relevant department im-mediately. If necessary, shut down and secure the ma-chine immediately. Rectify any leaks immediately in accor-dance with this user manual, paying particular attention tothe notes/instructions on handling in accordance withsafety requirements.


Chapter "11.3 Troubleshooting", page 97

9 Start-up





WARNING Excessive pressure at the hydraulic ports damages thevalve and can cause unsafe states in the machine and per-sonal injury.Pressure-limiting valves, for example, or other comparablesafety devices must be installed to limit the pressure at all hy-draulic ports to the specified maximum operating pressure.Maximum operating pressure:


WARNING Prior to start-up, the valves must be checked for correctmechanical design and correct configuration. Altering theconfiguration of the valve may change the function of thevalve to such an extent that it will no longer function asspecified in this user manual.






9 Start-up Preparations


9.1 PreparationsPreparations for start-upThe valves may only be started up when the following is ensured:

• The superordinated machine with all its installed components complieswith the latest versions of the relevant national and international regula-tions, standards and guidelines (such as e.g., the EU Machinery Directive,the regulations of the trade association and of TÜV or VDE).

• The valves and all other installed components are in a technically fault-free and operationally reliable state.

• No signals which can lead to uncontrolled movements in the machine aretransmitted to the valves.

Chapter "2.1 Intended operation", page 5





9 Start-up Start-up of the valves


9.2 Start-up of the valvesProcedure for start-upProcedure:

1. Make sure that all of the machine components, connections and portsconform to the specifications of the machine manufacturer and operator.

2. Prepare the hydraulic system.Chapter "9.4 Filling and flushing the hydraulic system", page 86

3. Establish the valve hydraulic connection.Chapter "7.3 Mounting the valves", page 62

4. Establish the valve electrical connection.Chapter "8 Electrical Connection", page 65

5. For valves with field bus interface: Connect the valve to the field bus.

6. Make sure that all of the mechanical, electrical and hydraulic connectionsare correctly established.

7. Make sure that the valve is correctly configured or carry out configuration.Chapter "3.5 Valve software", page 39Chapter "9.3 Configuration of the valves", page 83

8. Start-up of the hydraulic system.Chapter "9.5 Start-up of the hydraulic system", page 87

9. If necessary, correct the zero position parameters in the valve software.The parameters can be set or interrogated via the service or field bus in-terface in the valve software. Setting and interrogation can be performedfor example with the Moog Valve Configuration Software.



9 Start-up Configuration of the valves


9.3 Configuration of the valvesSafety instructions: Configuration of the valves

The Moog Valve Configuration Software is available as an accessory to sim-plify start-up, diagnosis and configuration of the valves.


9.3.1 Configuration via the field bus interfaceConfiguration of the valves via the field bus interface

Valves with field bus interfaces are started up, controlled, monitored and con-figured via the field bus interface (connectors X3 and X4).

9.3.1.1 Configuration with the machine controllerConfiguration with the machine controller

To be able to configure the valves with the machine controller, it is necessaryto connect the valve to the machine controller via the field bus.

WARNING Altering the configuration of the valve may change thefunction of the valve to such an extent that it will no longerfunction as specified in this user manual.



WARNING The selected settings must be documented after the con-figuration of the valves has been altered. The settings can be documented for example with the MoogValve Configuration Software.After a valve has been repaired or replaced, the user musttransfer the settings again to the repaired or new valve be-cause repaired or replacement valves are like new valves de-livered with factory settings.

Chapter "9.3.3 Factory setting of the valves", page 85Chapter "11.4 Repair", page 101



Configuration with the Moog Valve Configuration Software

Valves with CAN bus interface can be started up and configured via the CANbus interface (field bus connector X3) with the Moog Valve Configuration Soft-ware.


The following are required to be able to configure the valves with the MoogValve Configuration Software via the CAN bus interface (field bus connec-tor X3):

• USB start-up module• Configuration/start-up cable• PC with installed Moog Valve Configuration Software

To be able to configure the valves via the CAN bus interface, it is necessary toconnect the valve as follows to the PC with installed Moog Valve ConfigurationSoftware:

Connection of the valve to a PC via the CAN bus interface (X3)

Figure 44: Connection of the valve to a PC via the CAN bus interface (field bus connector X3)

9.3.1.2 Configuration with the Moog Valve Configuration Software

USB start-up module, configuration/start-up cable and Moog Valve Con-figuration Software are available as accessories.


USB start-up module

configuration/start-up cable

PCvalve

field bus connector X3 USB port



9.3.2 Configuration via the service interfaceConfiguration of the valves via the service interface

Valves without CAN bus interface can be started up and configured via the ser-vice interface (service connector X10) with the Moog Valve Configuration Soft-ware.


The following are required to be able to configure the valves with the MoogValve Configuration Software via the service interface (service connector X10):

• USB start-up module• Configuration/start-up cable• Adapter for service connector X10 • PC with installed Moog Valve Configuration Software

To be able to configure the valves via the service interface, it is necessary toconnect the valve as follows to the PC with installed Moog Valve ConfigurationSoftware:

Connection of the valve to a PC via the service interface (X10)

Figure 45: Connection of the valve to a PC via the service interface (service connector X10)

9.3.3 Factory setting of the valvesFactory setting of the valves

The valve is delivered from the factory with preset parameters. This presettingcorresponds to the factory setting of the valves.Depending on the valve type and model, it may be necessary to adapt the pa-rameters for the pressure controller to the respective application.If the valve is to be incorporated in a field bus, it may also be necessary toadapt the communication parameters.

9.3.4 Storing of parametersVolatile memory Modified parameters are initially stored in the volatile memory of the valve elec-

tronics microprocessor system, i.e., they are lost if the power supply is inter-rupted. When the power supply is restored, the parameters which were storedlast are again available.

Non-volatile memory The microprocessor system also has a non-volatile memory. In order to storethe modified parameters in this memory, it is necessary to send a memorycommand to the valve. If the power supply is interrupted, the modified valveconfiguration will again be available after the supply is restored.

USB start-up module, configuration/start-up cable, adapter and MoogValve Configuration Software are available as accessories.


USB start-up module

configuration/start-up cable

adapter for service

connector X10PCvalve

service connector X10 USB port

Please contact us or one of our authorized service centers for informationon the factory setting parameters.

9 Start-up Filling and flushing the hydraulic system


9.4 Filling and flushing the hydraulic system

Procedure for filling and flushing the hydraulic system

Procedure:

1. Depressurize the hydraulic system.

2. Fill the hydraulic system in accordance with the instructions of the manu-facturer and the operator of the machine.Because new hydraulic fluid is contaminated, the hydraulic system mustbe filled via a filling filter with a filter fineness of at least β10 ≥ 75 (10 µm(0.00039 in) absolute).

3. Replace existing filter elements with flushing elements in accordance withthe instructions of the manufacturer and the operator of the machine.

4. Remove the servovalve.Chapter "11.1 Removing the valves", page 95

5. Instead of the servovalve, you must install a flushing plate or, if allowed bythe hydraulic system, a switching valve.

6. Carefully flush the hydraulic system in accordance with the instructions ofthe manufacturer and the operator of the machine. Observe the followingwhen doing so:

– In order to obtain the best possible flushing effect, make sure the hy-draulic fluid reaches operating temperature.

– Observe the minimum flushing time t:

– End the flushing process when at least the cleanliness level 18/15/12as specified in ISO 4406 is achieved.

7. Depressurize the hydraulic system.

8. Replace flushing elements with suitable filter elements in accordance withthe instructions of the manufacturer and the operator of the machine.

9. Remove the flushing plate or switching valve.

10. Mount the servovalve.Chapter "7.3 Mounting the valves", page 62

WARNING If a switching valve is fitted to flush the hydraulic system,this must not cause any potentially dangerous states inthe machine.

Use the flushing plate to flush lines P and T.The switching valve can also be used to flush the actuator with linesA and B.

The flushing plates are not included in the valves’ scope of delivery.They are available as accessories.


V [l] : tank capacityQ [l/min] : pump delivery

t 5 VQ-------- h[ ]⋅=

9 Start-up Start-up of the hydraulic system


9.5 Start-up of the hydraulic systemProcedure for start-up of the hydraulic system

Procedure:

1. Start up the hydraulic system in accordance with the instructions of themanufacturer and the operator of the machine.

2. For valves with field bus interface: Check the status LEDs after switchingon the operating voltage.

3. Vent the hydraulic system in accordance with the instructions of the man-ufacturer and the operator of the machine.

4. Vent the valve (D639-R only).Chapter "9.5.1 Venting", page 87

It may be necessary to repeat the procedure.

5. Check the hydraulic system for external leaks.

9.5.1 Venting

9.5.1.1 Tool requiredTool required for venting the valves

The following tool is required for venting the valve:• Torque wrench for hexagon socket head cap screws WAF 5

CAUTION Air trapped in the hydraulic system, particularly in the case ofhigh pressure peaks in the system, can cause a diesel effect. Ifthe trapped air bubbles are compressed very quickly and thusheated, this can cause the mixture to self-ignite. This causes avery high increase in pressure and temperature locally, whichin turn can result in damage in the hydraulic system, e.g., toseals or components, causing the oil to age more quickly.To avoid diesel effects, it is essential to vent the hydraulic sys-tem and the valve.

9 Start-up Start-up of the hydraulic system


9.5.1.2 Venting the valve and the actuator

Procedure for venting the valve and the actuator

Procedure:

1. A low system pressure of max. 10 bar (145 psi) must be applied.

2. Input valve command signals so that the pressure-controlled port is pres-surized with system pressure.

3. Carefully open the venting screw by approx. one revolution.Position of the venting screw: Figure 1, page 12

4. Wait until no further air escapes or until the escaping hydraulic fluid con-tains no further air bubbles.

5. Retighten the venting screw with the torque wrench for WAF 5 hexagonsocket head cap screws.Tightening torque of the venting screw: 15 Nm (11.1 lbf ft).Higher tightening torques can result in the destruction of the sealing ringfor the venting screw.

6. Remove the escaped hydraulic fluid.

7. If the actuator is higher than the valve, the actuator must likewise bevented at the highest point.

WARNING The valve and actuator may only be vented at a low sys-tem pressure of max. 10 bar (145 psi).Risk of injury!

10 Operation


10 OperationSafety instructions: Operation












10 Operation






WARNING It is only permitted to alter the valve configuration duringoperation if this does not cause any dangerous states inthe machine and in its surroundings. Altering the configuration of the valve may change thefunction of the valve to such an extent that it will no longerfunction as specified in this user manual.




WARNING It is only permitted to control the valves via the MoogValve Configuration Software if this does not cause anydangerous states in the machine and in its surroundings.It is not permitted to operate the Moog Valve ConfigurationSoftware on a field bus while the field bus is communicatingwith the machine.





10 Operation Preparations for operation


10.1 Preparations for operationPreparations for valve operation

The valves may only be operated as a component part of a superordinatedoverall system, for example in a machine.

Chapter "2.1 Intended operation", page 5

The following must be completed before the valve is operated:• Qualified project planning• Correct start-up and configuration of the valve

Chapter "9 Start-up", page 79

10.2 Operation of the valveOperation of the valve: Control via signals from the machine controller

The valve is controlled via signals which it receives from the machine control-ler.Direct interventions by the user on the valve during normal operation arenot necessary.The valve has no controls, such as e.g., switches or buttons, which must be ac-tuated.

The transition of the valve into the standby state or the fail-safe state can alsobe initiated by corresponding signals at the enable input of valve connector X1:

• Signals between 8.5 V and 32 V referenced to GND at the enable inputrender the valve to standby.

• Depending on the model, signals lower than 6.5 V at the enable input ren-der the valve in the mechanical or electrical fail-safe state.


On valves with field bus interfaces the valve operating state and the networkstatus are indicated via the status LEDs on the valve electronics housing.


Information on maintenance:Chapter "11.2 Maintenance", page 96

Information on correcting possible faults:Chapter "11.3 Troubleshooting", page 97


10 Operation Shutting down the valve


10.3 Shutting down the valveSafety instructions: Shutting down the valve

Shutting down the valve The valve can be shut down as follows:• Switching off the supply voltage• Transition of the valve into the 'DISABLED' and 'INIT' valve states• Signal at the enable input of valve connector X1

Chapter "3.2.3 Fail-safe events", page 21

If necessary, the valve must be restarted after it has been shut down or after itstransition into the fail-safe state.

Chapter "3.2.4 Restarting the valve", page 23

DANGER Hydraulic pressure and electrical supply voltage are stillnormally applied after the valve has been shut down. Themachine is not automatically put out of operation whenthe valve is shut down.During operation, do not carry out any work, such as e.g.,mounting or removal, electrical or hydraulic connection,troubleshooting or servicing, on the valves or the ma-chine.Failure to comply with this requirement results in danger dueto:




11 Service


11 ServiceSafety instructions: Service












11 Service





WARNING In the interests of avoiding damage to the valves or acces-sories, repairs/corrective maintenance and other mainte-nance/servicing work explained in this user manual, onaccount of the complexity of the internal components ofthe valves or accessories, may only be carried out by usor by our authorized service centers.



CAUTION Unsuitable or defective accessories or unsuitable or defectivespare parts may cause damage, malfunctions or failure of thevalve or the machine.We recommend the use of original accessories and originalspare parts.

Chapter "13 Accessories and Spare Parts", page 105


11 Service Removing the valves


11.1 Removing the valves11.1.1 Tools and materials required

Tools and materials required for removing

The following tools and materials are required for removing the valves:• Torque wrench for hexagon socket head cap screws WAF 5

(for removing and mounting the valve)• If necessary, spare port O-rings

Chapter "13.2 Spare parts", page 107• Shipping plate and associated fastening elements• Flat-bladed screwdriver 8x1.6 [mm] and if necessary open-ended

wrench WAF 10(for mounting the shipping plate)

11.1.2 Procedure

Safety instructions: Removing the valves

Procedure for removing the valve

Procedure:

1. Shut down and switch off the machine and place in a de-energized anddepressurized state.

2. Release the valve’s installation screws.

3. Remove the valve from the mounting surface.

4. Check for presence, elasticity, integrity and correct seating of the O-ringsin the valve ports (A, B, P, T, etc.).

5. Replace hardened and damaged O-rings with new O-rings.

6. Mount the shipping plate to the valve’s hydraulic ports.Tightening torque of the attachment screws: approx. 5 Nm (3.7 lbf ft) (hand-tight)

7. If the valve is not to be immediately reused or is to be serviced: Store thevalve in its original packaging.

Chapter "6 Transportation and Storage", page 55

8. If necessary, block the ports of the hydraulic system to prevent the hy-draulic fluid from being contaminated.


11 Service Maintenance


11.2 MaintenanceEmbrittlement of the sealing materials

Changes in temperature, effects of the hydraulic fluid, such as e.g., pressurepeaks, and similar influences can, depending on the application, expose thesealing materials to different levels of wear. This in turn may cause leaks.

In order to avoid possible resulting impairments or damage, we recommendthat the valve, after a period of storage or operation of more than 5 years, beinspected by us or one of our authorized service centers.

11.2.1 Checking and replacing the port O-rings11.2.1.1 Tools and materials required

Tools and materials required for checking and replacing the O-rings

The following are required for checking and replacing the port O-rings:• Torque wrench for hexagon socket head cap screws WAF 5

(for removing and mounting the valve)• If necessary, spare port O-rings

Chapter "13.2 Spare parts", page 107

11.2.1.2 Checking and replacing the O-ringsProcedure for checking and replacing the O-rings

Procedure:

1. Remove the valve.Chapter "11.1 Removing the valves", page 95

2. Check for presence, elasticity, integrity and correct seating of the O-ringsin the valve ports (A, B, P, T, etc.).

3. Replace hardened and damaged O-rings with new O-rings.

4. Remount the valve.Chapter "7.3 Mounting the valves", page 62

11.2.2 Monitoring the pressure transducer drift


If the valve is exposed to high loads, it may be necessary to reduce thecheck/inspection interval to suit the application.


11 Service Troubleshooting


11.3 TroubleshootingPossible faults The following faults may occur:

• Leak at the valve connecting surfaceChapter "11.3.1.1 Leak at the valve connecting surface", page 97

• Leak at the linear force motor screw plugChapter "11.3.1.2 Leak at the linear force motor screw plug", page 97

• Leak at the venting screwChapter "11.3.1.3 Leak at the venting screw", page 98

• No hydraulic response by the valveChapter "11.3.2 No hydraulic response by the valve", page 99

• Instability of the control loopsChapter "11.3.3 Instability of the external control loop", page 100Chapter "11.3.4 Instability of the internal valve control loops", page 100

Restarting after correcting the fault

After correcting the fault, if necessary remount and restart the valve.Chapter "7.3 Mounting the valves", page 62Chapter "3.2.4 Restarting the valve", page 23

11.3.1 Leaks11.3.1.1 Leak at the valve connecting surface

Leak at the valve connecting surface

Measures:• Check for presence, elasticity, integrity and correct seating of the O-rings

in the valve ports (A, B, P, T, etc.).If necessary, install O-rings, replace or correct the seating.

• Check the valve’s mounting and connecting surfaces, the valve and thehydraulic system for damage, contamination and evenness.

• Check installation screws for secure and correct seating.Retighten screws if necessary with the torque wrench for WAF 5 hexagonsocket head cap screws.Tightening torque of installation screws: 11 Nm (8.1 lbf ft) ± 10 %

11.3.1.2 Leak at the linear force motor screw plug

Leak at the linear force motor screw plug

Measures:• Check ports P and T for correct connection.• Check max. pressure in ports T and Y.

The return pressure in T may exceed 50 bar (725 psi) only if port Y isused.

If the fault cannot be corrected by means of the measures set out below,please contact us or one of our authorized service centers.

WARNING In the event of a leak at the linear force motor screw plug,have the valve checked by us or one of our authorized ser-vice centers.



11.3.1.3 Leak at the venting screwLeak at the venting screw Measures:

• Check for presence, elasticity, integrity and correct seating of the sealingring on the venting screw.If necessary, install the sealing ring, replace or correct the seating.

• Check the venting screws for secure and correct seating.Retighten the venting screw if necessary with the torque wrench forWAF 5 hexagon socket head cap screws.Tightening torque of the venting screw: 15 Nm (11.1 lbf ft).Higher tightening torques can result in the destruction of the sealing ringfor the venting screw.



11.3.2 No hydraulic response by the valve

No hydraulic response by the valve

Measures:• Check whether all of the machine components, connections and ports

conform to the specifications of the machine manufacturer and operator.To do so, on the valves compare the data on the nameplate with the spec-ifications.

• Check whether the hydraulic installation is correct and whether all of thehydraulic ports are correctly established.

• Check whether the hydraulic pressure is present.• Check whether the supply voltage is present (indicated at the status LEDs

on valves with field bus interfaces).• Check whether the connectors are correctly attached and non-corroded.• Check whether there is a command signal failure or a faulty electric cable.• Check whether the desired signals are applied at the connector, in partic-

ular at the enable input.• Check whether the command signal is analog or applied via the field bus

interface (depending on the model).• Check whether the valve is in the fault state (indicated at the status LEDs

on valves with field bus interfaces).If necessary, correct the fault and then cancel the fault via the field bus orreset the valve by switching the supply voltage off and then on again.

Typical fault causes:– Supply voltage drops below 18 V

Chapter "4.4 Electrical data", page 46– Maximum permissible temperature exceeded

Chapter "4.1 General technical data", page 43– Control error (e.g., due to the spool sticking, which can be caused for

instance by contamination)– No command signal (e.g., due to open circuit)

• Check whether the enable signal is applied. If there is no enable, the valvecannot be rendered in the 'ACTIVE' valve state.

• Check whether the configuration of the internal valve software is correct.

WARNING Touching electrically live parts exposes the user/operatorto the risk of:

• Electric shock• Uncontrolled sequences of motions• Destruction• Malfunction

Touching electrically live parts must therefore be avoided!



11.3.3 Instability of the external control loopInstability of the external control loop

Measures:• Check whether the external control loop is stable.

If necessary, reduce control loop gain.• Check whether the internal valve control loops are stable.

Chapter "11.3.4 Instability of the internal valve control loops", page 100• Check whether the controlled system was modified.

11.3.4 Instability of the internal valve control loops11.3.4.1 Flow control

Instability of the internal valve control loops: Flow control

Measures:• Check whether the signal quality of the command signals is sufficient.• Check whether the system pressure is stable.• Check whether the quality and cleanliness level of the hydraulic fluid used

conforms to the specifications of the manufacturer and the operator of themachine.

• Check whether the valve is operational.To do so, perform a comparison of the command and actual value signals.

11.3.4.2 Pressure controlInstability of the internal valve control loops: Pressure control

Measures:• Check whether the signal quality of the command signals is sufficient.• Check whether the system pressure is stable.• Vent the valve or the hydraulic system.

Chapter "9.5.1 Venting", page 87• Optimize the control loop gain of the pressure controller by adapting the

parameters (P, I, D, etc.).Chapter "3.3.5 Notes on the pressure controller control response

(D639-R)", page 29• Check whether the quality and cleanliness level of the hydraulic fluid used

conforms to the specifications of the manufacturer and the operator of themachine.

• Check whether the valve is operational.To do so, switch to flow control (Q-control) via the integrated service orfield bus interface and perform a comparison of the command and actualvalue signals.

• Check whether the pressure controlled system has been modified.

11 Service Repair


11.4 RepairSafety instructions: Repair

Authentic Moog repairs Authentic Moog repairs are performed exclusively by us or our authorizedservice centers. This is the only way of accessing the latest specifications re-quired for repair work. With these specifications, the original valve performancedata can be re-established and the customarily high reliability and long life cy-cle can be guaranteed even after repairs.

Repair quality seal

Figure 46: Repair quality seal

Our repair seal is a guarantee that an authentic Moog repair has been per-formed.

11.4.1 Contact persons for repairsContact persons for repairs

Please refer to the following page on our internet site for contact information re-lating to our service centers:

http://www.moog.com/industrial/globallocator

WARNING Repaired valves or replacement valves are, like newvalves, delivered with the factory settings. In the event ofa repair job for defective valves, we and our authorizedservice centers shall not accept liability for software anddata installed by the customer.

Chapter "9.3.3 Factory setting of the valves", page 85Prior to start-up, the valves must be checked for correctmechanical design and correct configuration. Altering theconfiguration of the valve may change the function of thevalve to such an extent that it will no longer function asspecified in this user manual.




In the event of a repair job for defective valves, we and our authorized ser-vice centers reserve the right to perform a repair or, after consultation, al-ternatively to supply replacement valves with an identical or compatibleequipment specification.

http://www.moog.com/industrial/globallocator

11 Service Repair


For your notes.

12 Disposal


12 Disposal

Environmental protection: Disposal

It is essential to comply with the relevant national waste disposal regulationsand environmental protection provisions when disposing of valves, spare partsor accessories, packaging that is no longer needed, hydraulic fluid or auxiliarymaterials and substances used for cleaning!If necessary, the items to be disposed of must be expertly dismantled into indi-vidual parts, separated into individual materials and placed in the correspond-ing waste system or earmarked for recycling.

The valve contains among others the following materials:• Electronic components• Adhesives and casting compounds• Parts with electro-plated surfaces• Permanent-magnet materials• Hydraulic fluid• Assorted metals and plastics



12 Disposal


For your notes.

13 Accessories and Spare Parts Accessories


13 Accessories and Spare Parts

13.1 Accessories

CAUTION Unsuitable or defective accessories or unsuitable or defective spare parts may cause dam-age, malfunctions or failure of the valve or the machine.We recommend the use of original accessories and original spare parts.

The accessories are not included in the valves’ scope of delivery.Chapter "6.2 Scope of delivery of the valve", page 56

Item designationNumber required Description Order number

Service sealing kit (contains all the O-rings for ports A, B, P, T, T1 and Y and O-ring recess X)

11

Kit NBR 90 ShoreKit FKM 90 Shore

B97215-N681-10B97215-V681-10

Flushing plates

for ports P, A, B, T, T1, X, Y 1 B67728-001

for ports P, T, T1, and X, Y 1 B67728-002

for ports P, T, T1, X, Y 1 B67728-003

Connecting plates On request

Installation screws 4 M6x60hexagon socket head cap screw as per DIN EN ISO 4762, quality class: 10.9, tightening torque: 11 Nm (8.1 lbf ft) ± 10 %

A03665-060-060

Mating connector (metal), IP65

for 6+PE-pin valve connector X1 1 As per DIN EN 175201-804usable cable with min. Ø 8 mm (0.31 in) and max. Ø 12 mm (0.47 in)

B97007-061

for 11+PE-pin valve connector X1 1 As per DIN EN 175201-804usable cable with min. Ø 11.5 mm (0.45 in) and max. Ø 13 mm (0.51 in)

B97067-111

Tools for the 6+PE-pin mating connectors of the valve connector X1

Crimping tool for the mating connector 1 C21162-001

Tool insert for the crimping tool 1 For contact sizes 16 and 20 C21163-001

Installation tool 1 For contact sizes 16 and 20 C21164-001

Removal tool 1 For contact sizes 16 and 20 C21165-001

Tool kit for the 6+PE-pin mating connectors of the valve connector X1(contains crimping tool, tool insert, installation and removal tool)

1 C21166-001

Tools for the 11+PE-pin mating connectors of the valve connector X1

Crimping tool for the mating connector 1 B97136-001

Table 17: Accessories (part 1 of 2)

13 Accessories and Spare Parts Accessories


Removal tool 1 B97137-001

Tool kit for the 11+PE-pin mating connectors of the valve connector X1(contains crimping and removal tool)

1 B97138-001

Connection cable for valve connector X1, 3 m (9.8 ft)

with 6+PE-pin mating connector 1 C21033-003-001

with 11+PE-pin mating connector 1 C21031-003-001

Dust protection caps, IP65

for field bus connector with external thread 1 Metal cap with O-rings C55823-001

for field bus connector with internal thread 1 Metal cap with O-rings CA24141-001

USB start-up module(for service connector X10)

1 C43094-001

Configuration/start-up cable, 2 m (6.5 ft) 1 TD3999-137

Adapter for service connector X10 (M8 to M12) 1 CA40934-001

SELV/PELV power supply (24 V DC, 10 A) 1 D137-003-001

Power supply cord, 2 m (6.5 ft) 1 B95924-002

Moog Valve Configuration Software 1 On request

Supplementing documents

User manual"D637-R/D639-R series", English

1 CA61892-001

User manual"D637-R/D639-R series", German

1 CA61892-002

Application notes "Technical Note TN 353", English

1 Protective grounding and electrical shield-ing of hydraulic valves with integrated electronics

CA58437-001

Application notes "Technical Note TN 353", German

1 Protective grounding and electrical shield-ing of hydraulic valves with integrated electronics

CA58437-002

Application notes "Technical Note TN 494", English

1 Maximum permissible lengths of electric cables for the connection of hydraulic valves with integrated electronics

CA48851-001

Application notes "Technical Note TN 494", German

1 Maximum permissible lengths of electric cables for the connection of hydraulic valves with integrated electronics

CA48851-002

Catalog "D637-R/D639-R", EnglishCatalog "D637-R/D639-R", German

1 On request


Table 17: Accessories (part 2 of 2)

The PDF files of the supplementing documents can be downloaded from the following link:http://www.moog.com/industrial/literature


13 Accessories and Spare Parts Spare parts


13.2 Spare parts


O-rings

for ports A, B, P, T and T1 5 ID 12.4 x Ø 1.8 [mm] (ID 0.488 x Ø 0.071 [in])

NBR 90 ShoreFKM 90 Shore

-45122-004-42082-004

for port Y and O-ring recess X 2 ID 15.6 x Ø 1.8 [mm] (ID 0.614 x Ø 0.071 [in])

NBR 90 ShoreFKM 90 Shore

-45122-011-42082-011

Sealing ring for venting screw 1 Required only for D639-R

HNBRFKM

B97018-060-003B97018-060-002

Shipping plate 1 A40508

Fastening elements for shipping plate Do not use to mount the valve!

Attachment screws 4 M6x55, slotted fillister head screw, tightening torque: approx. 5 Nm (3.7 lbf ft) (hand-tight)

-66119-060-055

Fastening nuts 4 M6, hexagon nut -66118-060

Plastic dust protection cap for service connector 1 CA23105-080-010

Table 18: Spare parts

13 Accessories and Spare Parts Spare parts


For your notes.

14 Index A…B


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


14 Indexβx (symbol for filter fineness), see Filter fineness∆p (symbol for pressure difference), see Pressure difference∆pN (symbol for rated pressure difference),

see Rated pressure differenceν (symbol for viscosity), see Viscosity2x2-Way operation, see Valve configurations2-Way operation, see Valve configurations3-Way operation, see Valve configurations4-Way operation, see Valve configurations

AA (control port), see PortsA/D (analog digital converter)

in the block diagram of the valve electronics • 14Abbreviations

list of abbreviations • 121A/D (analog digital converter)ACV (axis control valve, valve with axis control function)CAN (Controller Area Network)CiA (CAN in Automation e. V.)D/A (digital analog converter)DDV (Direct Drive Valve)DIN (Deutsches Institut für Normung e. V.,

German institute for standardization)DSP (draft standard proposal)EMC (electromagnetic compatibility)EN (Europa-Norm, European standard)ESD (electrostatic discharge)EU (European Union)FKM (fluorocarbon rubber,

material for seals, such as O-rings)GND (ground)ID (identifier)ID (inner diameter, e.g., on O-rings)IEC (International Electrotechnical Commission)IP (international protection)ISM (industrial, scientific and medical, e.g., ISM equipment)ISO (International Organization for Standardization)LED (light emitting diode)LSS (Layer Setting Services)LVDT (linear variable differential transformer,

position transducer)MS (module state LED)NBR (nitrile butadiene rubber,

material for seals, such as O-rings)NG (Nenngröße, nominal size of the valve)NS (network state LED)PC (personal computer)PE (protective earth)PELV (protective extra-low voltage)PID (proportional integral differential, e.g., in PID controller)PWM (pulse width modulation)SELV (safety extra-low voltage)TN (Technical Note)TÜV (Technischer Überwachungsverein,

German technical inspection agency)USB (Universal Serial Bus)UV (ultraviolet)

Abbreviations (continued)VDE (Verband der Elektrotechnik Elektronik

Informationstechnik e. V., German association of electrical engineering, electronics and information technology)

VDI (Verein Deutscher Ingenieure e. V., association of German engineers)

WAF (width across flats for wrenches)Accessories, ordering information • 105Acronyms • 121'ACTIVE', see Valve statesActual value outputs,

see Outputs: analog actual value outputsACV (axis control valve, valve with axis control function)

analog input connectors X5…X7in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12

digital signal interface connector X2in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12

Adapter for service connector X10 • 85ordering information • 106removal room • 59–60

Address of Moog GmbH • AAir humidity, permissible relative air humidity for storage • 43Ambient conditions

permissible ambient conditions • 43potentially explosive environment • 5, 43

Ambient temperature, permissible ambient temperature • 43Analog input connectors X5…X7

see Connectorssee also Inputs, analog inputs

Armature of the linear force motor, in the representative depiction • 13

Attachment screws of the shipping plate • 62, 95fastening nuts, ordering information • 107in the installation drawing of the valve • 58–60ordering information • 107position of bores F1…F4 in the mounting surface mounting

pattern • 61tightening torque • 95width across flats • 62, 95

BB (control port), see PortsBlock diagrams

flow and pressure control (pQ-control) • 26flow control (Q-control) • 24pressure control (p-control) • 25valve electronics • 14

Bushing in the representative depiction of the valve • 12Bushing-spool identification in the type designation • 20

14 Index C…D




CCAN (Controller Area Network)

CAN bus interface • 16, 39, 58, 84literature, additional, CAN fundamentals • 123

Cavitation • 49Centering springs of the linear force motor

in the representative depiction • 13Characteristic curves • 49–53

flow diagram • 49flow signal characteristic curve • 29, 50

design for measuring • 50hydraulic zero position • 29

frequency response of the spool stroke • 52pressure signal characteristic curve • 50

design for measuring • 50step response of the spool stroke • 52

CiA (CAN in Automation e. V.), see StandardsCleaning

cleaning connecting and mounting surfaces • 63disposal of auxiliary materials and substances used • 103

Cleanliness level of the hydraulic fluid • 44, 86Coding pin, see Positioning pinCommand inputs, see Inputs: analog command inputsCommand signals, single-ended • 76Compatibility, electromagnetic (EMC), see EMCConfiguration of the valves • 39, 83

configuration via the field bus interface • 83configuration via the service interface • 85factory setting of the valves • 85

Configuration software, see Moog Valve Configuration Software

Configuration/start-up cable • 84–85ordering information • 106

Connecting plates • 105Connecting surface

cleaning • 63troubleshooting in the event of a leak • 97

Connection cable for valve connector X1ordering information • 106

Connection of the valveselectrical connection • 65, 67–77hydraulic connection • 57, 62–63

Connector overview (arrangement of the connectors on the valve electronics housing) • 68

Connectorsoverview (arrangement of the connectors on the valve

electronics housing) • 68X1 (valve connector) • 16, 30, 46, 69

connection cable, ordering information • 106in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12mating connector • 69

ordering information • 105removal room • 58–60tools for the mating connector

ordering information • 105pin assignment • 70–75

X2 (digital signal interface connector)in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12see also Signal interface, digital

Connectors (continued)X3 and X4 (field bus connectors) • 16–17

dust protection caps • 66, 81, 90ordering information • 106

in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12mating connector, removal room • 58–59see also Field bus interface

X5…X7 (analog input connectors)in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12see also Inputs, analog inputs

X10 (service connector) • 16–17, 85adapter • 85

ordering information • 106removal room • 59–60

dust protection cap • 66, 81, 90ordering information • 107

in the block diagram of the valve electronics • 14in the connector overview • 68in the representative depiction of the valve • 12see also Service interface

Control • 16, 30Control loops

pressure controller, see Pressure controllerspool position controller, see Spool position controllertroubleshooting in the event of instabilities

instability of the external control loop • 100instability of the internal valve control loops • 100

Control port A, see PortsControl port B, see PortsConversion of actual value output signals Iout (4–20 mA)

into 2–10 V • 77Copyright of the user manual • ACorrective maintenance, see RepairCurrent command signal Icommand • 76Current inputs, see Inputs: analog command inputsCurves, see Characteristic curvesCutaway drawings, see Representative depictionsCutaway views, see Representative depictions

DD/A (digital analog converter)

in the block diagram of the valve electronics • 14Data matrix code

example • 41on the nameplate • 40structure of the data matrix code • 41

Date of manufacture on the nameplate • 40DDV (Direct Drive Valve) • 11Diagrams, see Characteristic curvesDiesel effect • 87Dimensions

valves with CAN bus interface • 58valves with Profibus or EtherCAT interface • 59valves without field bus interface • 60

DIN (Deutsches Institut für Normung e. V., German institute for standardization), see Standards

Directives, overview of quoted directives • 125'DISABLED', see Valve states

14 Index E…F




Discharge, electrostatic (ESD), see ESDDisposal • 103Documents, supplementing

catalog • 3, 106ordering information • 106Technical Notes (TNs) • 3

ordering information • 106Drift of the internal pressure transducer, monitoring the drift •

26, 82, 91, 96DSP (draft standard proposal), see Standards: CiA DSPDust protection caps

for field bus connectors X3 and X4 • 66, 81, 90ordering information • 106

for service connector X10 • 66, 81, 90ordering information • 107

Duty cycle • 46Dynamic data • 45

EElectrical connection • 65, 67–77Electrical data • 46Electromagnetic compatibility (EMC), see EMCElectrostatic discharge (ESD), see ESDEmbrittlement of seals • 56, 96EMC (electromagnetic compatibility)

EMC directive • 125EMC protection requirements for immunity to interference

and emitted interference • 46–47EMC standards • 46–47

Emissions • 47Emitted interference • 46–47EN (Europa-Norm, European standard), see StandardsEnable input, see Inputs: digital inputs: enable inputEnvironmental protection

disposal • 103emissions • 47

ESD (electrostatic discharge), safety instructions • 10EtherCAT

EtherCAT interface • 16, 59literature, additional, EtherCAT fundamentals • 123

EU (European Union)Evenness, required for mounting surface • 61Exclusion of liability • 4Exclusion of warranty • 4Explosive environment, potentially explosive environment •

5, 43

FF1…F4 (position of the bores for installation screws or

attachment screws of the shipping plate in the mounting surface mounting pattern) • 61

Factory setting of the valves • 85Fail-safe events • 21

control commands • 22failure of the supply voltage • 21restarting the valve

after the occurrence of a fail-safe event • 23settable fault reaction • 22signals at the enable input • 21

Fail-safe functions • 18electrical fail-safe function • 20mechanical fail-safe functions • 18valves with mechanical fail-safe function F or D • 19valves with mechanical fail-safe function M • 19valves with mechanical fail-safe function W,

see Fail-safe valvesFail-safe identification, in the type designation • 19Fail-safe states

electrical fail-safe state • 18, 20–22mechanical fail-safe state • 18–19, 21–22

Failure elimination, see Troubleshooting'FAULT DISABLED', see Valve states'FAULT HOLD', see Valve statesField bus connectors X3 and X4

see Connectorssee also Field bus interface

Field bus interface • 16configuration of the valves via the field bus interface • 83in the block diagram of the valve electronics • 14see also Field bus connectors X3 and X4

Filling filter for the hydraulic systemrequired filter fineness βx • 86

Filling the hydraulic system • 86Filter, filling filter for the hydraulic system

required filter fineness βx • 86Filter fineness βx

filling filter for the hydraulic system • 86FKM (fluorocarbon rubber) • 44, 107Flow Q

flow signal characteristic curve • 29, 50formula for calculation • 49leakage flow QL • 44maximum flow Qmax • 44, 49rated flow QN • 44

Flow and pressure control (pQ-control) • 11, 26block diagram • 26

Flow control (Q-control) • 11, 24block diagram • 24troubleshooting in the event of instability of the internal valve

control loop • 100Flow control command inputs,

see Inputs: analog command inputsFlow diagram • 49Flow signal characteristic curve

characteristic curve • 50design for measuring • 50electrical zero position • 29hydraulic zero position • 29

Flow speed • 49Flushing plate

ordering information • 105using when flushing the hydraulic system • 86

Flushing the hydraulic system • 86Formulas

flow Q • 49input voltage Uin • 76minimum flushing time t of a hydraulic system • 86

Frequency response of the spool stroke • 52Function

linear force motor • 13valve • 11

Fuse protection, external fuse protection for each valve • 46

14 Index G…I




GGaskets, see O-ringsGND (ground)

ground contact of valve connector X1 • 70–75Ground contact (GND) of valve connector X1 • 70–75Ground (electrical, GND)

ground contact (GND) of valve connector X1 • 70–75single-ended command signals • 76single-ended connection of the analog command inputs • 76

Gumming of hydraulic fluid during long-term storage • 56

HHandling in accordance with safety requirements • 6HNBR (hydrogenated nitrile butadiene rubber) • 44'HOLD', see Valve statesHydraulic data • 44Hydraulic fluid

cleanliness level • 44, 86diesel effect • 87disposal • 103gumming during long-term storage • 56permissible fluids • 44permissible temperature range • 44permissible viscosity ν • 44required filter fineness βx for the filling filter for the hydraulic

system • 86Hydraulic oil, see Hydraulic fluidHydraulic symbols • 27–28

2x2-way operation • 282-way operation • 283-way operation • 274-way operation • 27on the nameplate • 40

Hydraulic systemconnection of the valve to the hydraulic system • 57, 62filling and flushing • 86

minimum flushing time • 86required filter fineness βx for the filling filter • 86

preparing • 86start-up • 86–87venting • 87

Hysteresis • 45

IIcommand (symbol for current command signal),

see Current command signalIin (symbol for input current), see Input currentIout (symbol for output current), see Output currentIsupply (symbol for supply current), see Supply currentID (identifier)ID (inner diameter, e.g., on O-rings)IEC (International Electrotechnical Commission)Immunity to interference • 46–47'INIT', see Valve statesInput current Iin • 71–72, 74–75Input resistances Rin

analog command inputs • 46, 70–75

Input voltageformula for calculation (single-ended command signals) • 76

Input voltage command signal Ucommand • 76Input voltage Uin • 70, 73Inputs, analog command inputs

±10 mA differential • 33, 71, 74±10 V differential • 32, 70, 730–10 mA differential • 36, 71, 740–10 V differential • 35, 70, 734–20 mA differential • 34, 37, 72, 75current inputs

±10 mA differential • 33, 71, 740–10 mA differential • 36, 71, 744–20 mA differential • 34, 37, 72, 75

flow control command inputs±10 mA differential • 33, 71, 74±10 V differential • 32, 70, 734–20 mA differential • 34, 72, 75

in the block diagram of the valve electronics • 14input resistances Rin • 46, 70–75pressure control command inputs

0–10 mA differential • 36, 71, 740–10 V differential • 35, 70, 734–20 mA differential • 37, 72, 75

signal typesoverview • 30on the nameplate • 40signal type identification in the type designation • 31

single-ended connection • 76voltage inputs

±10 V differential • 32, 70, 730–10 V differential • 35, 70, 73

Inputs, analog inputsin the block diagram of the valve electronics • 14see also Analog input connectors X5… X7

Inputs, digital inputsenable input • 16, 21, 38, 46, 70–75

in the block diagram of the valve electronics • 14signals at the enable input as fail-safe events • 21

Instability of the control loops, troubleshootinginstability of the external control loop • 100instability of the internal valve control loops • 100

Installation drawing, see DimensionsInstallation position • 43Installation screws

in the installation drawing of the valve • 58–60ordering information • 105position of bores F1…F4 in the mounting surface mounting

pattern • 61required quality class • 62specification • 62tightening torque • 62width across flats • 62, 95

Intended operation of the valves • 5Intended use of the valves • 5Interfaces, see Signal interfacesInterference, emitted • 46–47Interference, immunity to interference • 46–47IP (international protection), see Protection type by enclosureISO (International Organization for Standardization),

see StandardsItem numbers, see Order numbers

14 Index L…N




LLeakage flow QL • 44Leakage port Y, see PortsLeakage, troubleshooting

connecting surface of the valve • 97linear force motor screw plug • 97venting screw • 98

LED (light emitting diode)status LEDs

in the block diagram of the valve electronics • 14in the representative depiction of the valve • 12indication of operating state and network status • 91

Light emitting diodes (LEDs), see LEDLinear force motor • 13

armature • 13bearing • 13centering springs • 13coil • 13cutaway drawing • 13cutaway view • 13permanent magnets • 13representative depiction • 13screw plug • 13

troubleshooting in the event of a leak • 97Linear variable differential transducer (LVDT), see LVDTLinearity of pressure control • 44List of figures • viiList of tables • vLiterature, additional

CAN fundamentals • 123directives, quoted • 125EtherCAT fundamentals • 123Moog publications • 123profibus fundamentals • 123standards, quoted • 123–125supplementing documents • 3

Load impedance RLanalog actual value outputs • 46, 70–75, 77

Locating pin, see Positioning pinLSS (Layer Setting Services)

example of an LSS address • 41LSS address on the nameplate • 40structure of the LSS address • 41

LVDT (linear variable differential transducer, position transducer)in the block diagram of the valve electronics • 14in the representative depiction of the valve • 12

MMaintenance • 93–94

O-ring checking and replacementports • 96

Manufacturer’s address • AManufacturer’s declaration • 3Mass, in kg (lb) • 43Mating connector

for field bus connectors X3 and X4removal room • 58–59

for valve connector X1 • 69ordering information • 105removal room • 58–60tools for the mating connector

ordering information • 105Microprocessor system

for storing the valve software parameters • 85in the block diagram of the valve electronics • 14in the valve electronics • 13

Minimum flushing time for flushing the hydraulic system • 86Mode of operation

linear force motor • 13valve • 11

Model numberexample • 41on the nameplate • 40structure of the model number • 41

Modifications, see Structural modificationsMoog Valve Configuration Software • 39, 83–85, 90

ordering information • 106Mounting • 57, 62

installation position • 43mounting option • 43orientation of the venting screw • 43, 63procedure • 63tools and materials required • 62

Mounting option • 43Mounting pattern of mounting surface • 44, 61Mounting surface • 61

cleaning • 63mounting pattern • 44, 61permissible average roughness Ra • 61required evenness • 61

MS (module state)

NNameplate • 40

in the installation drawing of the valve • 58–60NBR (nitrile butadiene rubber) • 107NG (Nenngröße, nominal size) • 44Nominal size (NG, Nenngröße) • 44'NOT READY', see Valve statesNS (network state)

14 Index O…P




OOccupational safety and health

safe distances for cardiac pacemakers and similar devices due to magnetic fields • 9, 47

safety equipment • 9, 55, 57, 66, 81, 90, 94, 103sound insulation measures • 9, 47

Oil, see Hydraulic fluidOperating pressure pP

maximum operating pressure • 44–45maximum operating pressure on the nameplate • 40

Operation of the valves • 89–91ambient conditions, permissible • 43intended operation • 5necessary preparations • 91

Operational modes • 11, 24p-control, see Pressure controlpQ-control, see Flow and pressure controlQ-control, see Flow controlflow and pressure control, see Flow and pressure controlflow control, see Flow controlpressure control, see Pressure control

Order numbersaccessories • 105spare parts • 107

Ordering information, see Order numbersOriginal packaging, see PackagingO-rings

checking and replacing the O-ringsports • 96

cleaning • 63embrittlement • 56, 96ordering information • 107permissible materials • 44protection against the effects of ozone and UV

by shipping plate • 55, 62, 80, 95service sealing kit, ordering information • 105specification • 107

Output current Iout • 70–75, 77Output voltage Uout • 77Outputs, analog actual value outputs

overview • 464–20 mA (pressure actual value output) • 38, 70–754–20 mA (spool position actual value output) • 38, 70–75conversion of Iout (4–20 mA) into 2–10 V • 77in the block diagram of the valve electronics • 14load impedance RL • 46, 70–75pressure actual value output 4–20 mA • 38, 73–75spool position actual value output 4–20 mA • 38, 70–75

Overlap • 27, 29, 44

PP (pressure port), see PortsPmax (symbol for power consumption at maximum flow),

see Power consumptionPmin (symbol for power consumption at motor in neutral

position), see Power consumptionp (symbol for pressure), see Pressure

∆p (symbol for pressure difference), see Pressure difference∆pN (symbol for rated pressure difference),

see Rated pressure differencepP (symbol for operating pressure), see Operating pressurePackaging

disposal • 103storing original packaging • 55–56

Part numbers, see Order numbersPC (personal computer)p-control, see Pressure controlPE (protective earth)

protective earth contact PE of valve connector X1 • 70–75PELV (protective extra-low voltage),

see SELV/PELV power supplyPermanent magnet linear force motor, see Linear force motorPermanent magnets of the linear force motor

in the representative depiction • 13Personnel, selection and qualification of personnel • 8

qualified users • 8PID (proportional integral differential)

PID controller • 25Pilot oil supply • 44Pin assignment of valve connector X1 • 70–75Ports

diameter of ports • 44, 61in the representative depiction of the valve • 12leakage port Y • 28

Y-identification in the type designation • 28on the nameplate • 40O-ring checking and replacement • 96position of the ports in the mounting surface mounting

pattern • 61troubleshooting in the event of leaks • 97

Position transducer, see LVDTPower consumption Pmin and Pmax • 46Power pack, see SELV/PELV power supplyPower supply

connection via valve connector X1 • 70–75failure of the supply voltage • 21

restarting the valve afterwards • 23power supply cord, ordering information • 106SELV/PELV power supply • 46, 66

ordering information • 106supply voltage • 46

failure of the supply voltage • 21in the block diagram of the valve electronics • 14on the nameplate • 40

Power supply cord, ordering information • 106pQ-control, see Flow and pressure controlPressure p

operating pressure pP, see Operating pressurepressure difference ∆p, see Pressure differencerated pressure difference ∆pN,

see Rated pressure differencePressure actual value outputs,

see Outputs: analog actual value outputsPressure control (p-control) • 11, 25

block diagram • 25linearity of pressure control • 44troubleshooting in the event of instability of the internal valve

control loop • 100Pressure control command inputs,

see Inputs: analog command inputs

14 Index Q…S




Pressure controllerfactory setting • 85in the p-control block diagram • 25in the pQ-control block diagram • 26notes on control response • 29troubleshooting in the event of instability of the internal valve

control loop • 100Pressure difference ∆p • 49Pressure fluid, see Hydraulic fluidPressure limitation • 10, 80Pressure port P, see PortsPressure range identification, in the type designation • 45Pressure sensor, see Pressure transducerPressure signal characteristic curve

characteristic curve • 50design for measuring • 50

Pressure transducer, internalin the block diagram of the valve electronics • 14in the representative depiction of the valve • 12monitoring the drift • 26, 82, 91, 96

Problem elimination, see TroubleshootingProfibus

literature, additional, profibus fundamentals • 123profibus interface • 16, 59

Prohibition to duplicate the user manual • AProhibition to reproduce the user manual • AProper use of the valves • 5Proprietary names, see TrademarksProtection type by enclosure (IP) • 46Protective earth contact PE of valve connector X1 • 70–75Protective earth (PE)‚ protective earth contact PE of valve

connector X1 • 70–75Protective extra-low voltage (PELV)

see SELV/PELV power supplyProtective grounding • 3, 47, 67, 70–75Pulse width modulation (PWM)

in the block diagram of the valve electronics • 14Pump delivery Q • 86PWM (pulse width modulation), see Pulse width modulation

QQ (pump delivery), see Pump deliveryQ (symbol for flow), see FlowQL (symbol for leakage flow), see Leakage flowQmax (symbol for maximum flow), see FlowQN (symbol for rated flow), see Rated flowQ-control, see Flow controlQualification, demands on the user • 8Quality class, required for installation screws • 62

RRa (symbol for average roughness), see RoughnessRin (symbol for input resistance), see Input resistancesRL (symbol for load impedance), see Load impedanceRated flow QN • 44Rated pressure difference ∆pN • 49Reference temperature of the valve electronics • 43–44Release date of the user manual • 1

Removal roomadapter of the service connector X10 • 59–60mating connectors • 58–60

Removing the valve • 93–95Repair • 93–94, 101Representative depictions

linear force motor • 13servovalve • 12

Responsibilities of the manufacturer and the operator of the machine • 7

Restarting the valve • 23Roughness Ra, average, permissible for mounting surface • 61

SSafe distances for cardiac pacemakers and similar devices due

to magnetic fields • 9, 47Safety extra-low voltage (SELV)

see SELV/PELV power supplySafety instructions

general safety instructions • 9ambient conditions, permissible • 43analog command inputs • 32–37, 69attachment elements for the shipping plate • 62, 95cleaning the valve connecting surface, mounting surface

and O-rings • 63configuration of the valves • 83, 90configuring the valve with regard to flow and pressure • 24connection to the hydraulic system • 57, 62corrective maintenance • 93–94, 101delivery of repaired valves and replacement valves with

factory settings • 101diesel effect • 87disposal • 103electrical and hydraulic zero position • 29electrical connection • 65–66ESD (electrostatic discharge) • 10explosive environment

potentially explosive environment • 5, 43failure of the supply voltage • 21flushing the hydraulic system • 86handling in accordance with safety requirements • 6hydraulic connection • 57, 62hydraulic fluid • 9, 57, 65, 80, 94

diesel effect • 87intended operation • 5intended use • 5leak at the linear force motor screw plug • 97linear force motor screw plug • 97maintenance • 93–94mounting • 57, 62mounting pattern of mounting surface • 61occupational safety and health • 55, 57, 66, 81, 90, 94, 103

safe distances for cardiac pacemakers and similar devices due to magnetic fields • 9, 47

safety equipment • 9sound insulation measures • 9, 47

open connectors • 66, 81, 90operation • 89–90operation, intended • 5operational modes • 24original accessories and original spare parts • 94, 105

14 Index S…S




Safety instructions (continued)personnel, selection and qualification of personnel •

8–9, 57, 65, 80, 90, 94pressure control (p-control) • 25pressure limitation • 10, 80proper use • 5removing the valve • 93–95repair • 93–94, 101restarting the valve after the transition of the valve into the

fail-safe state • 23safety-critical applications • 18service • 93–94servicing • 93–94shipping plate • 95shutting down the valve • 92start-up • 79–81storage • 55structural modifications • 8supply voltage

failure of the supply voltage • 21symbols, used • 2technical data • 9, 43, 90transportation • 55troubleshooting • 93–94, 97, 99typographical conventions • 2use, intended • 5use, proper • 5valve software • 39, 83, 90valve state 'NOT READY' • 15, 21–22venting • 88venting screw • 63wiring • 65–66zero position, electrical and hydraulic • 29

Safety shoes • 9Safety-critical applications • 18Scope of delivery • 56Screw plug on the linear force motor

in the representative depiction • 13troubleshooting in the event of a leak • 97

Sealing ring for venting screwordering information • 107troubleshooting in the event of a leak at the venting screw •

98Seals, see O-ringsSELV (safety extra-low voltage), see SELV/PELV power supplySELV/PELV power supply • 46, 66

ordering information • 106Serial number on the nameplate • 40Service • 93–101

corrective maintenance, see Repairmaintenance, see Maintenancerepair, see Repairservicing, see Maintenance

Service connector X10see Connectorssee also Service interface

Service interface • 16configuration of the valves via the service interface • 85in the block diagram of the valve electronics • 14see also Service connector X10

Service sealing kit, ordering information • 105Servicing, see MaintenanceShielding • 3, 67

Shipping plate • 55, 80attachment screws • 62, 95

in the installation drawing of the valve • 58–60ordering information • 107position of bores F1…F4 in the mounting surface

mounting pattern • 61tightening torque • 95width across flats • 62, 95

fastening nuts, ordering information • 107mounting • 95ordering information • 107removal • 63

Shock resistance • 43Shutting down the valve • 92Signal interface, digital

in the block diagram of the valve electronics • 14see also Connectors: X2

Signal interfaces • 16field bus interface, see Field bus interfaceservice interface, see Service interfacevalve connector X1

actual value outputs, see Outputs: analog actual value outputs

enable input, see Inputs: digital inputsinputs, analog command inputs,

see Inputs: analog command inputsinputs, digital inputs, see Inputs: digital inputs

Signal type identification in the type designation • 31Signal types for analog command inputs,

see Inputs: analog command inputsSignal zero of valve connector X1 • 70–75Software

Moog Valve Configuration Software • 39, 83–85, 90ordering information • 106

valve software • 39configuration of the valves • 39, 83

via the field bus interface • 83via the service interface • 85

factory setting • 85microprocessor system • 13

for storing parameters • 85Sound insulation measures • 9, 47Spare parts, ordering information • 107Spool

bushing-spool identification in the type designation • 20defined spring-determined position of the spool in the

mechanical fail-safe state • 19frequency response of the spool stroke • 52in the representative depiction of the valve • 12overlap • 27, 29, 44step response of the spool stroke • 52step response time for 0 to 100 % spool stroke • 45zero lap • 27, 29, 44zero position (electrical and hydraulic) • 29

Spool position actual value outputs, see Outputs: analog actual value outputs

Spool position controllerin the p-control block diagram • 25in the pQ-control block diagram • 26in the Q-control block diagram • 24

14 Index T…T




Standardsoverview of quoted standards • 123–125CiA DSP • 41, 122–123DIN • 124DIN EN • 124DIN EN ISO • 125EN • 125ISO • 125

Start-uphydraulic system • 86–87restarting the valve • 23valve • 79–85

Start-up and configuration software, see Moog Valve Configuration Software

Static data • 45Status LEDs, see LEDStep response of the spool stroke • 52Step response time for 0 to 100 % spool stroke • 45Storage • 55–56

ambient conditions, permissible • 43embrittlement of seals • 56gumming of hydraulic fluid • 56original packaging • 55–56storage location for user manuals • 1

Structural modifications • 8Styles, used • 2Subject to change without notice - user manual • A, 1Supplementing documents, see Documents, supplementingSupply current Isupply • 76Supply voltage, see Power supplySupply zero of valve connector X1 • 70–75Symbols

list of symbols • 121βx (filter fineness)∆p (pressure difference)∆pN (rated pressure difference)Icommand (current command signal)Iin (input current)Iout (output current)Isupply (supply current)ν (viscosity)Pmax (power consumption at maximum flow)Pmin (power consumption at motor in neutral position)p (pressure)pN (rated pressure)pP (operating pressure)Q (flow)Q (pump delivery)QL (leakage flow)Qmax (maximum flow)QN (rated flow)Ra (average roughness)Rin (input resistance)RL (load impedance)T (temperature)t (time)Ucable (voltage drop on the cable)Ucommand (input voltage command signal)Uin (input voltage)Uout (output voltage)V (volume)

Symbols, used • 2

TT (symbol for temperature), see TemperatureT (tank port), see Portst (symbol for time)Table of contents • iTank port T, see PortsTechnical data

characteristic curves • 49–53diagrams • 49–53dimensions • 58–60electrical data • 46general technical data • 43hydraulic data • 44installation drawings • 58–60mounting pattern of mounting surface • 44, 61static and dynamic data • 45

Technical Note (TN) • 3ordering information • 106

Temperature drift, see Zero shiftTemperature T

permissible ambient temperature • 43permissible temperature range for hydraulic fluid • 44reference temperature of the valve electronics • 43–44

Throttle valve • 11Tightening torques

attachment screws of the shipping plate • 95installation screws • 62venting screw • 88

TN (Technical Note), see Technical NoteTools for mating connector of valve connector X1

ordering information • 105Trademarks, registered • 3Transportation • 55

ambient conditions, permissible • 43transportation damage • 55

Troubleshooting • 93–94, 97–100overview of possible faults • 97instabilities of the control loops

external control loop • 100internal valve control loops • 100

leak at the linear force motor screw plug • 97leak at the valve connecting surface • 97leak at the venting screw • 98no hydraulic response by the valve • 99

TÜV (Technischer Überwachungsverein, German technical inspection agency)

Type designation • 45bushing-spool identification • 20fail-safe identification • 19on the nameplate • 40pressure range identification • 45signal type identification • 31Y-identification • 28

Typographical conventions • 2

14 Index U…X




UUcable (symbol for voltage drop on the cable),

see Voltage drop on the cableUcommand (symbol for input voltage command signal),

see Input voltage command signalUin (symbol for input voltage), see Input voltageUout (symbol for output voltage, see Output voltageUnpacking/checking a delivery • 56USB (Universal Serial Bus)

USB start-up module • 84–85ordering information • 106

Use, intended • 5Use, proper • 5User manual

copyright • Aordering information • 106prohibition to duplicate • Aprohibition to reproduce • Arelease date • 1storage location • 1styles, used • 2subject to change without notice • A, 1symbols, used • 2typographical conventions • 2version number • 1

Users, qualified • 8UV (ultraviolet), protection of the seals against the effects of

ozone and UV • 55, 62, 80, 95

VV (symbol for volume)Valve configurations • 27–28, 44

2x2-way operation • 282-way operation • 283-way operation • 274-way operation • 27hydraulic symbols

2x2-way operation • 282-way operation • 283-way operation • 274-way operation • 27

Valve connector X1, see ConnectorsValve construction type • 44Valve electronics • 13

block diagram • 14in the representative depiction of the valve • 12microprocessor system • 13

for storing the valve software parameters • 85reference temperature • 43–44

Valve software • 39configuration of the valves • 39, 83

via the field bus interface • 83via the service interface • 85

factory setting • 85microprocessor system • 13

for storing the valve software parameters • 85

Valve statesoverview of the valve states • 15'ACTIVE' • 15, 23'DISABLED' • 15, 21–23, 43–44, 92'FAULT DISABLED' • 15, 21–23'FAULT HOLD' • 15, 18, 20–23'HOLD' • 15, 18, 20–23'INIT' • 15, 21–23, 92'NOT READY' • 15, 21–22

VDE (Verband der Elektrotechnik Elektronik Informationstechnik e. V., German association of electrical engineering, electronics and information technology)

VDI (Verein Deutscher Ingenieure e. V., association of German engineers)

Ventinghydraulic system • 87valve • 87–88

Venting screwin the installation drawing of the valve • 58–60in the representative depiction of the valve • 12orientation of the venting screw when mounting the valve •

43, 63procedure for venting the valve • 88sealing ring, ordering information • 107tightening torque • 88troubleshooting in the event of a leak • 98width across flats • 87

Version number of the user manual • 1Vibration resistance • 43Viscosity ν of the hydraulic fluid • 44Voltage drop on the cable Ucable • 76Voltage inputs, see Inputs: analog command inputs

WWAF (width across flats), see Widths across flats (WAF)2x2-Way operation, see Valve configurations2-Way operation, see Valve configurations3-Way operation, see Valve configurations4-Way operation, see Valve configurationsWidths across flats (WAF)

attachment screws of the shipping plate • 62, 95installation screws • 62, 95venting screw • 87

Wiring • 65, 67–77Work gloves • 9

XX1, X2, …, X10, see Connectors

14 Index Y…Z




YY (leakage port), see PortsY-identification in the type designation • 28

ZZero lap • 27, 29, 44Zero position of the spool

electrical zero position • 29hydraulic zero position • 29

Zero shift • 45

14 Index


For your notes.

15 Appendix Abbreviations, symbols and identification letters


15 Appendix

15.1 Abbreviations, symbols and identification lettersAbb. Explanation

βx Symbol for filter fineness

∆p Symbol for pressure difference

∆pN Symbol for rated pressure difference

ν Symbol for viscosity

A Valve port (control port)

A Pin of 6+PE-pin valve connector X1

A/D Analog digital converter

ACV Axis Control Valve (valve with axis control function)

B Valve port (control port)

B Pin of 6+PE-pin valve connector X1

C Pin of 6+PE-pin valve connector X1

CAN Controller Area Network

CANopen Standardized communication profile

CiA CAN in Automation e. V. (international manufacturers’ and users’ organization for CAN users; http://www.can-cia.org)

D Differential (e.g., in PID controller)

D Fail-safe function D of valve

D Pin of 6+PE-pin valve connector X1

D/A Digital analog converter

DDV Direct Drive Valve

DIN Deutsches Institut für Normung e. V. (German institute for standardization; http://www.din.de)

DSP Draft standard proposal

E Pin of 6+PE-pin valve connector X1

EMC Electromagnetic Compatibility

EN Europa-Norm (European standard)

ESD Electrostatic discharge

EU European Union

F Fail-safe function F of valve

F Pin of 6+PE-pin valve connector X1

F1…F4 Bore for installation screws or attachment screws of the shipping plate in the mounting pattern of the valve mounting surface

FKM Fluorocarbon rubber (material for seals, such as e.g., O-rings)

G Bore for positioning pin in the mounting pattern of the valve mounting surface

GND Ground

I Integral (e.g., in PID controller)

Icommand Symbol for current command signal

Iin Symbol for input current

Iout Symbol for output current

Isupply Symbol for supply current

ID Identifier

ID Inner diameter (e.g., on O-rings)

IEC International Electrotechnical Commission (http://www.iec.ch)

Table 19: Abbreviations, symbols and identification letters (part 1 of 3)

Table 19: Abbreviations, symbols and identification letters

http://www.can-cia.org

http://www.din.de

http://www.iec.ch

15 Appendix Abbreviations, symbols and identification letters


IP International protection (IP code; degree of protection type by enclosure as per DIN EN 60529)

ISM Industrial, scientific and medical (e.g., ISM equipment)

ISO International Organization for Standardization (http://www.iso.org)

LED Light emitting diode

LSS Layer Setting Services as per CiA DSP 305 (LSS offers the option of setting the node parameters, such as e.g., module address or transmission rate, of a CAN node via the CAN bus)

LVDT Linear variable differential transformer (position transducer; senses the position of the spool in the valve)

M Fail-safe function M of valve

MS Module state LED

NBR Nitrile butadiene rubber (material for seals, such as e.g., O-rings)

NG Nenngröße (nominal size), e.g., 6

NS Network state LED

P Proportional (e.g., in PID controller)

P Valve port (pressure port)

Pmax Symbol for power consumption at maximum flow

Pmin Symbol for power consumption at motor in neutral position

p Symbol for pressure

pN Symbol for rated pressure

pP Symbol for operating pressure

PC Personal computer

PE Protective earth

PE Pin of 6 or 11+PE-pin valve connector X1

PELV Protective extra-low voltage

PID Proportional integral differential (e.g., in PID controller)

PWM Pulse width modulation

Q Symbol for flow

Q Symbol for delivery of a pump

QL Symbol for leakage flow

Qmax Symbol for maximum flow

QN Symbol for rated flow

Ra Symbol for average roughness

Rin Symbol for input resistance

RL Symbol for load impedance

SELV Safety extra-low voltage

T Symbol for temperature

T Valve port (tank port)

t Symbol for time

TN Technical Note

TÜV Technischer Überwachungsverein (German technical inspection agency)

Ucable Symbol for voltage drop on the cable

Ucommand Symbol for input voltage command signal

Uin Symbol for input voltage

Uout Symbol for output voltage

USB Universal Serial Bus

UV Ultraviolet

V Symbol for volume (such as e.g., tank capacity)

Abb. Explanation



http://www.iso.org

15 Appendix Additional literature


15.2 Additional literature

15.2.1 CAN fundamentalsAdditional literature: CAN fundamentals

CAN in Automation e. V.:http://www.can-cia.org

15.2.2 Profibus fundamentalsAdditional literature: Profibus fundamentals

PROFIBUS Users’ Organization:http://www.profibus.com

15.2.3 EtherCAT fundamentalsAdditional literature: EtherCAT fundamentals

EtherCAT Technology Group:http://www.ethercat.org

15.2.4 Moog publicationsAdditional literature: Moog publications

Press releases:http://www.moog.com/industrial/news

Newsletters:http://www.moog.com/industrial/newsletter

Articles in technical journals:http://www.moog.com/industrial/articles

Presentations and scientific publications:http://www.moog.com/industrial/papers

User manuals, TNs, catalogs, and similar:http://www.moog.com/industrial/literature

15.3 Quoted standards15.3.1 CiA DSP

Quoted standards: CiA DSP

CiA DSP 305CiA Draft Standard Proposal: CANopen Layer Setting Services and Proto-col (LSS)

VDE Verband der Elektrotechnik Elektronik Informationstechnik e. V.(German association of electrical engineering, electronics and information technology; http://www.vde.de)

VDI Verein Deutscher Ingenieure e. V. (association of German engineers; http://www.vdi.de)

WAF Width across flats for wrenches

X Valve port

X1…X10 Designations for the valve connectors

Y Valve port (leakage port)

Abb. Explanation



http://www.vde.de

http://www.vdi.de

http://www.can-cia.org

http://www.profibus.com

http://www.ethercat.org

http://www.moog.com/industrial/news

http://www.moog.com/industrial/newsletter

http://www.moog.com/industrial/articles

http://www.moog.com/industrial/papers


15 Appendix Quoted standards


15.3.2 DINQuoted standards: DIN DIN 51524-1

Pressure fluids; Hydraulic oils: HL hydraulic oils; Minimum requirements

DIN 51524-2Pressure fluids; Hydraulic oils: HLP hydraulic oils; Minimum requirements

DIN 51524-3Pressure fluids; Hydraulic oils: HVLP hydraulic oils; Minimum require-ments

15.3.3 DIN ENQuoted standards: DIN EN DIN EN 563

Safety of machinery – Temperatures of touchable surfaces – Ergonomicsdata to establish temperature limit values for hot surfaces

DIN EN 954-1Safety of machinery – Safety-related parts of control systems – Part 1:General design principles

DIN EN 982Safety of machinery – Safety requirements for fluid power systems andtheir components – Hydraulics

DIN EN 55011Industrial, scientific and medical (ISM) radio-frequency equipment – Ra-dio-frequency disturbance characteristics – Limits and methods of mea-surement

DIN EN 60068-2-6Environmental testing – Part 2: Tests; Test Fc: Vibration (sinusoidal)(IEC 60068-2-6:1995 + Corrigendum 1995)

DIN EN 60068-2-27Environmental testing – Part 2: Tests; Test Ea and guidance: Shock(IEC 60068-2-27:1987)

DIN EN 60529Protection types provided by enclosures (IP code)

DIN EN 61000-6-2Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Im-munity to interference for industrial environments

DIN EN 61000-6-3Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –Emitted interference for residential, commercial and light-industrial envi-ronments

DIN EN 61000-6-4Electromagnetic compatibility (EMC) – Part 6-4: Generic standards –Emitted interference for industrial environments

DIN EN 175201-804Detail specification – Circular connectors – Round contacts, size diameter1.6 mm (0.063 in), threaded coupling

15 Appendix Quoted directives


15.3.4 DIN EN ISOQuoted standards: DIN EN ISO

DIN EN ISO 1302Geometrical Product Specifications (GPS) – Indication of surface texturein technical product documentation

DIN EN ISO 4762Hexagon socket head cap screws

DIN EN ISO 12100Safety of machinery – Basic concepts, general principles for design

15.3.5 ENQuoted standards: EN EN 60204

Safety of machinery – Electrical equipment of machines

EN 61558-1Safety of power transformers, power supplies, reactors and similar prod-ucts – Part 1: General requirements and tests

EN 61558-2-6Safety of power transformers, power supply units and similar – Part 2-6:Particular requirements for safety isolating transformers for general use

15.3.6 ISOQuoted standards: ISO ISO 4401

Hydraulic fluid power – 4-port directional control valves – Mounting sur-faces

ISO 4406Hydraulic fluid power – Fluids – Method for coding level of contaminationby solid particles

15.4 Quoted directivesQuoted directives 98/37/EC

Directive 98/37/EC of the European Parliament and Council for alignmentof the legal and administrative provisions of the Member States for ma-chinery

89/336/EECDirective 89/336/EEC concerning electromagnetic compatibility (EMC)

VDI offers numerous directives for downloading:http://www.vdi-nachrichten.com/ce-richtlinien/basics/richtlinien.asp

http://www.vdi-nachrichten.com/ce-richtlinien/basics/richtlinien.asp

15 Appendix Quoted directives


For your notes.

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